- the bolt has been changed to an AR-15 styled bolt head with a plunger ejector Please complete the fields below to send your friend a link to this product. Conversion Kit, SRS-A1 Covert .300 win Mag, 18in. FrozenIceman • 4 mo. $269.95. $89.99. [12], In 2018 a modified MDR family rifle, the NGSAR, chambered in a proprietary 6.8mm polymer-cased ammunition cartridge made by PCP was selected as one of the United States Army's Next Generation Squad Weapon Program (NGSW) weapons trial finalists to replace the United States Army's 5.56×45mm NATO caliber weapon systems. They have not given up on the 6.8 mm or 7.62x39 rounds, but they will come later. I like my Tavors a lot too but I don't have a 7 and in 556 I prefer the aug and mdrx. The manufacturer indicated that these updates would be incorporated in all post-announcement shipments. This restriction is made under protest, but we have to do this to comply with California’s infringement on the freedoms of speech and association of the NRA and our members, supporters, and the general public. [7], In June 2022, Desert Tech and BLK LBL announced a 13-inch-long (330 mm) and 9-inch-long (230 mm) ALX hand guard solution similar to the Mantis without the bipod attachment. Copyright© 2022 JARD Inc. All Rights Reserved. Military models: Safe, semi, fullCivilian models: Safe, semi This revised model also features a stronger polymer resin that is more resistant to high-impact falls. The MDRX can go where you go. receipt, and we'll cover the cost of return shipping. [24] The aluminium handguard with integrated bipod is designed for both 16" and 20" barrel MDR/MDRX rifles and allows both an M-LOK under handguard attachment as well as an integrated bipod to be used at the same time without interference. Left Hand Conversion Kit, SRS 6.5 Creedmoor, 26 inch Left Handed Conversion Kit, SRS .308 Win, 26 inch Left Hand Conversion Kit, SRS-A1 Covert 6.5 Creedmoor, 18in. The gas system features a gas piston located above the barrel and a 6 position manual gas regulator.[6]. We want to ensure that making a return is as easy and hassle-free as possible! STANAG 4694 NATO Accessory Rail 7.62x51mm NATO. (factory pull weight) to 2.5 - 3.5 lbs. Shop now and get Free Value Shipping on most orders over $49 to the The side eject can be converted easily from right and left handed Forward Eject. Indo-MIM Pvt, Ltd received the 2017 distinction in hand/tools award by PIM international for their innovation in MIM development and part cost reduction. I actually ended up swapping back to the original trigger pack after testing them back to back. Place of Origin Side Eject, MDRx Conversion Kit, 5.56 Nato / 223R 20in. The trigger is fantastic on reliability and feel of pull. [6] The rifle is compatible with Desert Tech caliber conversion kits that allow the rifle to change caliber. [6] The MDR rifle is designed to be ambidextrous. Action Most Helpful Positive Review Fantastic upgrade This is a great upgrade! Left Hand, SRS-A2 .308 Win, 26in. receipt, and we'll cover the cost of return shipping. Gas-operated, rotating bolt It effectively reduces trigger pull weight from approximately 5 lbs. George's Review of JARD Desert Tech MDR / MDRX Trigger System Forward Eject, MDRx Conversion Kit, 5.56 Nato / 223R 16in. Its fully-ambidextrous design allows seamless shoulder transitions. Desert Tech MDR - Wikipedia All of our products are machined and assembled in Sheldon, Iowa. Rail Type Email: sales@opticsplanet.com, 9AM-7PM CT Mon-Fri MDRX - Desert Tech MICRO DYNAMIC RIFLE 26.2 in Length 900 m Range 1.3 s Reload Speed Order Now Forward Eject Side Eject Compliant Multi caliber The MDRX can be converted within a few minutes to any of the available calibers * The 16" 5.56N/.223R MDRX Conversion Kits come with the Raiden Flash Hider. Each conversion kit comes with a barrel assembly. Desert Tech MDRX Rifle - Xtreme Guns & Ammo The NGSAR was trialed in a carbine and automatic rifle configuration and were ultimately rejected. Desert Tech MDRx Rifles are the new generation Bullpup Rifles that are available in 4 caliber options: DT MDRX 6.5 Creedmoor, DT MDRX 308 win, DT MDRX 300 Blackout, and DT MDRX 5.56. Available in the NEW 6.5 Creedmore 20”, NEW .308 Win 20”, and NEW and has an improved center of balance. These kits became available for sale on January 29, 2021.[23]. The side eject can be converted easily from right and left handed and has an improved center of balance. The MDR can come chambered in 5.56x45mm, 7.62x51mm, and (with a conversion kit) .300 AAC Blackout. If for any • 5.56x45mm• 7.62x51mm• .300 AAC Blackout (conversion kit only) The MDR's trigger does pull its trigger bar rather than push it, which gives it a cleaner, better feel than many other bullpup designs. In addition a heavy hammer spring is available for special order to resolve light strike failures on hardened primers. They say that bullpup rifles can’t have good triggers because they need to have linkage to the trigger mechanism. reason you are not satisfied with your purchase, simply return the item within 30 days of IMO, THIS is the trigger that I was expecting (well, hoping for) when reading the initial literature on the MDR a few years ago. contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses. [15], The firearm was offered in .300 BLK, 6.5 Creedmoor (The first production semi-auto bullpup chambered in this cartridge), along with its original .223/5.56 and .308/7.62 calibers[1][6] as well as 20" barrel and side ejection options. . The MDRX-SE is available in the .223 Wylde 16” and the NEW Write a Review View All Reviews. Introducing the all new 2020 Desert Tech MDRX Rifle, available in 4 Great calibers: DT MDRX 6.5 Creedmoor, DT MDRX 308 win, DT MDRX 300 Blackout and DT MDRX 5.56 The new Desert Tech MDRX Bullpup Rifle is a enhanced version of the original MDR. The JARD Desert Tech MDR Sear Assembly delivers a smooth crisp trigger pull to the Micro Dynamic Rifle. All MDRX rifles now feature the new Ratchet Compensator, which provides excellent control and recoil reduction without subjecting the shooter to . Built to withstand the elements through time. depending on adjustment which is covered in detail in the owners manual. I have a sample size of two MDRx's. One is flawless so far. These updates including the 2019 6-hole gas valve and wider extractor. The Desert Tech MDR is a gas operated, conventional rotary bolt bullpup rifle. The best bullpup trigger you will ever buy. Forward Eject, MDRx Compliant Conversion Kit, 6.5 Creedmoor 20, MDRx Conversion Kit, 7.62 Nato / 308Win 16in. 5.56x45mm chambering;5.56x45mm STANAG magazines:• USGI M16 Mag. The MDR is fully ambidextrous with no modification necessary. The MDRx FDE Chassis features upgrades to the chassis' construction and trigger assembly. 5.56 FDE Ammunition Loading Language links are at the top of the page across from the title. We will contact you as soon as this product is available. Available in the NEW 6.5 Creedmore 20”, NEW .308 Win 20”, and NEW All MDRX rifles and conversion kits now include our new Patent pending “Free Flow” gas valve technology, improving gas flow, minimizing leakage, and reducing gas block contamination. [1][6][9] In 2018 a military version of the MDR, the NGSAR, was submitted, but was not one of the finalists in the United States Army Next Generation Squad Weapon Program trials to replace standard issue US army Infantry Weapons. This is quite possibly the best adjustable trigger made for a repeating rifle, let alone a ... Sign up and get exclusive access to promotions, sales events, pre-order sales & more! Save my name, email, and website in this browser for the next time I comment. The MDRx chassis has been upgraded with a polymer resin that is more . These Rifle Triggers designed by JARD deliver a reduced trigger pull weight of 2.5 to 3.5 pounds, and this drop-in replacement is easy to install yourself or with the help of a licensed gunsmith. The other has recoil like I'm shooting slugs. [3], The 2017 MDR in .308/7.62 win received public feedback that resulted in an upgrade program by Desert Tech on the gas and extractor system in 2019 to improve the rifle's ammunition tolerance without having to adjust the gas setting as frequently. contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses. : 20-rnd• USGI M16 Mag. Ltd., India. JARD Desert Tech MDR / MDRX Trigger System, JARD Ruger American Centerfire Trigger System, JARD AR Side Charge Complete Upper Receiver Assembly, JARD Ruger Precision Centerfire Rifle Trigger System, JARD Mossberg 4X4/MVP/Patriot Trigger System, JARD Ruger Precision Rimfire Rifle Trigger System, JARD Ruger 10/22 Adjustable Trigger Systems, JARD Ruger 10/22 Ultra Match Trigger Assembly, JARD Ruger 10/22 Non-adjustable Trigger Systems, JARD Ruger American Rimfire Trigger System, JARD Remington 700 Traditional Two-Lever/Single Stage Trigger Assembly, JARD AR Side Charge No Bolt Upper Receiver Assembly, JARD SAKO M995/75/85 & A7 Trigger Assembly, JARD AR Module Non-Adjustable Trigger System, JARD AR Non-Adjustable Two-Stage Heavy Trigger System, DEMO, JARD Desert Tech MDR / MDRX Trigger System, Black, JARD4656. [9][2] This provides a unique feature in which the rifle chassis can accept both intermediate cartridges and full-powered rifle cartridges on the same serial number platform (such as 5.56×45mm NATO and 7.62×51mm NATO magazines). Description The JARD Sear Assembly for the Desert Tech MDR / MDRX delivers premium trigger performance to the Micro Dynamic Rifle. FirearmCentral Wiki is a FANDOM Lifestyle Community. Barrel Length All MDRX rifles and conversion kits now include our new Patent pending “Free Flow” gas valve technology, improving gas flow, minimizing leakage, and reducing gas block contamination. Our test sample exhibited a smooth 5-lb., 7-oz., trigger pull without any take-up. by George , Verified Owner from IN, United States Written on October 28, 2022. Review for JARD Desert Tech MDR / MDRX Trigger System. It is ultra-compact, perfectly balanced, intuitively ergonomic, easily concealable, and fast to deploy. D&B Business Directory HOME / BUSINESS DIRECTORY / HEALTH CARE AND SOCIAL ASSISTANCE / SOCIAL . The MDR is adaptable in both size and caliber. Reviews & Ratings for JARD Desert Tech MDR / MDRX Trigger System MDR CERTIFICADORA DO NORDESTE LTDA Company Profile - Dun & Bradstreet March 3, 2022. A second generation version of the rifle is marketed as the MDRX (an acronym for micro dynamic rifle eXtreme). (factory pull weight) to 2.5 - 3.5 lbs. The MDR rifle is designed to be ambidextrous. If I turn down the gas it just jams. JARD Desert Tech MDR / MDRX Trigger System - OpticsPlanet These were: 5.56x45 NATO, 7.62x51 NATO, 300 Blackout, 6.8 mm Remington SPC and 7.62x39 Russian. Detachable box magazine Step 3) Fine tune your rifle with the proper gas setting by shooting a minimum of a full magazine through the rifle to ensure you get consistent feeding from the magazine and ejecting the empty cases from the forward ejecting chute. Gun Review: Desert Tech MDR - The Truth About Guns Get 10% Off - Subscribe to Our Email List, Toll-Free: +1-800-504-5897 The Desert Tech MDR (short for Micro Dynamic Rifle) is an American bullpup assault rifle. depending on adjustment which is covered in detail in the owners manual. It's longer, heavier, and spongier. The Desert Tech Micro Dynamic Rifle, or MDR is a family of multi caliber capable autoloading bullpup rifles designed by Desert Tech in 2014. The MDR can come chambered in 5.56x45mm, 7.62x51mm, and (with a conversion kit) .300 AAC Blackout. 406.4mm Forward Eject. It includes 10RD Forward Eject. Desert Tech The MDR (an acronym for micro dynamic rifle) is a family of autoloading bullpup rifles designed by Desert Tech (formerly Desert Tactical Arms) in 2014. JARD Desert Tech MDR / MDRX Trigger System - Megaammunitionstore [2] This update is considered the Generation 2 MDR Gas System. MDRX-COM has side eject and forward eject options . MDR vs Tavor 7 - AR15.COM Your email address will not be published. Conversion Kit 1 in 11 Twist, SRS-A2 .308 Win, 22in. Desert Tech By using this form you agree with the storage and handling of your data by this website. I have always felt that the mdrx had a decent factory trigger especially for a bullpup but this trigger pack brings a match grade trigger to the mdrx. The MDRX-SE is available in the .223 Wylde 16” and the NEW Desert Tech MDR: A Popular Semi-Auto Rifle in 2020 Universal Attachments In addition, it reduces the trigger pull weight from approximately 5 lbs. These Rifle Triggers designed by JARD deliver a reduced trigger pull weight of 2.5 to 3.5 pounds, and this drop-in replacement is easy to install yourself or with the help of a licensed gunsmith. JARD Desert Tech MDR / MDRX Trigger System. The new ratchet compensator reduces recoil by over 50% and eliminates muzzle rise for greater overall accuracy. Review: Desert Tech MDR | An Official Journal Of The NRA This is a great upgrade! a 20” barrel, shark fin grip, 10 rd magazine, and a muzzle compensator. Learn more about our Return Policy. Period Produced This improved trigger has a lighter trigger pull and less creep. 665.5mm Desert Tech MDRx Semi FDE FE Rifle Chassis MDR-CH-FE-F The gas system features a gas piston located above the barrel and a 6 position manual gas regulator. Real-time trigger alerts. Its compact size and superior ergonomics maximize its portability without sacrificing speed, power, or precision. [21], On January 28, 2021, the MDRX Micron conversion kit was announced that allowed the purchase of a 11.5" 5.56/.223 Wylde barrel, replacement hand guard, ejector plates, a new 'Raiden' flash hider, and bolt replacement for a side eject bullpup with a total length of 23.43". * I have always felt that the mdrx had a decent . Civilian models are also available, which are restricted to the semi-automatic fire mode only. This results in improved fitment with the magazine, increasing mag retention. The MDRX can go where you go. Desert Tech MDR | FirearmCentral Wiki | Fandom Characteristics 7401 3rd Ave Bessemer, Michigan(MI), 49911, JARD Desert Tech MDR / MDRX Trigger System, Be the first to review “JARD Desert Tech MDR / MDRX Trigger System”. Built to withstand the elements through time. I waited for gen two for the bugs to be worked out. I understand why DT went with the trigger that they did (so that the gun would be appropriate for LEO/mil usage as-delivered), but this thing makes a very noticeable improvement in the trigger weight/feel of the weapon. FAQ - Desert Tech Tomorrow's Weapons Currently, the first two chamberings will be 5.56 and 7.62 NATO, with the 300 Blackout available as a conversion kit only. Civilian models are also available, which are restricted to the semi-automatic fire mode only. Designer Companies Drop in installation is quick and simple (see video above) so you can get straight to enjoying superior trigger performance. Seems like this new gas system would be the fix it needs. Located approximately 350 km north of Salvador, which is the capital of the Brazilian state of Bahia, the city has a coastline along the Atlantic Ocean and has an average elevation of 4 m above sea level. Desert Tech MDRX JARD trigger pack. MDR MIM parts including the Barrel Block (Trunnion), Gas Block, Bolt Catch, 7.62 mag conversion bar, ejector retainer, and extractor link, are produced by Indo-MIM Pvt. : 30-rnd• (More)7.62x51mm chambering;SR-25 compatible magazines:• 10-rnd• 20-rnd Conversion Kit, SRS-A2 Covert .300 Win Mag, 18in. As a supplemental incentive, Desert Tech announced their MDR generation 2 gas system upgrade was to be covered under their warranty program for all owners. Copyright © 2023 Desert Tech LLC | All Rights Reserved. The trigger of the MDRX has been improved, providing a lighter pull with less creep. Micro Dynamic Rifle Dimensions Installation is so easy a child could do it, and there probably are some that do. This results in improved fitment with the magazine, increasing mag retention. I have always felt that the mdrx had a decent factory trigger especially for a bullpup but this trigger pack brings a match grade trigger to the mdrx. .223 Wylde 20” calibers. It effectively reduces trigger pull weight from approximately 5 lbs. The handguard is a 9-inch-long (230 mm), 16.7-ounce (470 g), aluminium handguard with an integrated bipod that replaces the factory polymer handguard and improved zero for handguard mounted parts. The Desert Tech MDR is a gas-piston-driven semi-automatic available in either .223 Rem., .300 Blackout, .308 Win. Intl. Conversion Kits - Desert Tech Forward Eject, MDRx Compliant Conversion Kit, 5.56 Nato / 223R 20in. New for 2020, the Desert Tech MDRX, takes the company's revolutionary bullpup rifle design to the next level. Learn more about our Return Policy. [24], In March 2022, ES Tactical, a Desert Tech Dealer who specializes in precision upgrade parts,[25] began to sell after market caliber conversion kits in .350 Legend and .450 Bushmaster, resulting in the first bullpup to be chambered in those cartridges. Fantastic upgrade - Desert Tech MDR / MDRX Trigger System Review THE MDR IS DESIGNED FOR FUTURE DEFENSE needs. Break weight is about 7.5 lbs. Desert Tech MDR Rifles | Desert Tech MDR for Sale - EuroOptic.com Experience a smoother, crisper trigger pull with the JARD Desert Tech MDR / MDRX Trigger System. Fax: +1-866-534-3097 Forward Eject, MDRX Forward-Eject to Side-Eject Conversion Kit, MDRx Conversion Kit, 300 Blackout 16IN. Conversion Kit, SRS-A2 .338 Lapua Magnum, 26in. stats_f='' + escape(document.referrer); stats_f=stats_f.replace('_','----'); if (navigator.appName=='Netscape'){stats_b='NS';}, if (navigator.appName=='Microsoft Internet Explorer'){stats_b='MSIE';}, if (navigator.appVersion.indexOf('MSIE 3')>0) {stats_b='MSIE';}. [9][2], The Desert Tech MDR is a gas operated, conventional rotary bolt bullpup rifle. MDRx Conversion Kit, 7.62 Nato / 308Win 16in. Get the latest business insights from Dun & Bradstreet. Each rifle includes a chassis and one complete conversion kit. Burris - 6.5 Creedmoor IR Promo 6/5/23 - 6/30/23, JARD Remington 700 Traditional Two-Lever/Single Stage Trigger Assembly, 11 oz., Silver, JARD4355, TRYBE Defense AR-10/AR-15 Fire Control Group Kit, Black, ARFCGK, TRYBE Defense Breathing Armor Reusable 4 Layer Water Repellent Face Mask, Adults, Gray, TRBMASK-1, TRYBE Defense Enhanced AR Trigger Guard, Black, ENTRGGRD, by (factory pull weight) to 2.5 – 3.5 lbs. View the Shop Gallery Featured Products Desert Tech MDR / MDRX $269.95 Add To Cart JARD AR Set Trigger $224.95 Add To Cart JARD J72 (.17 WSM) $819.95 This is a great upgrade! Forward Eject, MDRx Conversion Kit, 6.5CM 20in. * The 16" 5.56N/.223R MDRX Conversion Kits come with the Raiden Flash Hider. Left Hand, SRS-A2 Covert .308 Win, 16in. Your email address will not be published. RoF, Cyclic . ~750rpm It can quickly. The item you are trying to purchase is currently out of stock.Please enter your name, email, and phone number below. Megaammunitionstore.com © 2023 All Rights Reserved. [17] A large multi shooter community study in 2022, including aftermarket precision vendors such as ES Tactical, was able to quantify the performance of the stock OEM barrel between 1.9 and 5.6 MOA with 5 shot groups in .308 with various ammunition as well as identified a contributing failure mode of Trunnion fasteners loosening over time. Find company research, competitor information, contact details & financial data for MDR CERTIFICADORA DO NORDESTE LTDA of ARACAJU, SERGIPE. Built to survive the harshest military conditions. The side eject version of the MDRX is a less expensive option that also weighs less by .5 lbs. Ultralight Conversion Kit, SRS-A1 .300 Win Mag, Left Hand, 26in. The JARD Sear Assembly for the Desert Tech MDR / MDRX delivers premium trigger performance to the Micro Dynamic Rifle. [11], The .308/7.62 MDR was 10,000 round endurance tested with .308 win 150 grain FMJ American Eagle, 7.62x51 149 grain American Eagle, 7.62 m80 ball US Surplus and averaged 1 failure in 2000 rounds. Desert Tech MDR Standard full-sized model. Aracaju experiences a hot and humid tropical monsoon climate. 10RD Forward Eject, MDRx Conversion Kit, 7.62 Nato / 308Win 16in. Conversion Kit 1 in 11 Twist, SRS-A2 6.5 Creedmoor, 22in. Length Conversion Kit, SRS-A1 .338 Lapua Magnum, Left Hand, 26in. I really love the MDR, it has so many interesting mechanics and checks all the right boxes for me while also getting rid of all the usual bullpup . : +1-847-513-6201 [13] In addition to addressing the criticism, Desert Tech provided a technical root cause analysis presentation on the platform failures and resulting improvements with the generation 2 gas system. It can quickly. On March 18, 2021, a collaboration between Desert Tech and BLK LBL Bipods was announced to develop, produce, and sell the Mantis handguard. The MDR is adaptable in both size and caliber. The side eject version of the MDRX is a less expensive option that also weighs As a result, the NRA is forced to restrict the sending of certain materials and information into California. . However, it definitely isn't comparable to Desert Tech's precision bolt-action rifles. Quality control along with engineering and production improvements has allowed us to increase the tolerance of our MDRX magazine conversion bars. The JARD Desert Tech MDR Sear Assembly delivers a smooth crisp trigger pull to the Micro Dynamic Rifle. Desert Tech's Small Package Puts In Work: MDRX 6.5 Creedmoor Reviewed [5][2][10] The MDR contains an ambidextrous forward and side eject port and viewing window that allows for tool free forward ejector side change. If for any Exactly. Feed System This new rifle features enhanced polymer construction, an upgraded trigger and an improved gas block. Built to survive the harshest military conditions. They say that bullpup rifles can’t have good triggers because they need to have linkage to the trigger mechanism. $960.00. Desert Tech MDRx 7.62 NATO/.308 Win 20" 20rd FE Conversion Kit MDR-CK-A2020-FE $ 950.00; Desert Tech DT FDE Sling w/Flush Cup Swivels ACC0138 $ 68.55; Desert Tech MDRx Semi BLK 5.56 . [6], Many of the MDR rifle components are produced using modern Metal injection molding (MIM) metalworking processes that are becoming more common in the firearm industry. reason you are not satisfied with your purchase, simply return the item within 30 days of 7.62 FDE Sign up and get exclusive access to promotions, sales events, pre-order sales & more! . New for 2020, the Desert Tech MDRX, takes the company's revolutionary bullpup rifle design to the next level. UPGRADE CURSOS E TREINAMENTOS LTDA Company Profile - Dun & Bradstreet *All other MDRX Conversion Kits come with the Ratchet Compensater installed. [27]. Desert Tech MDRX - ES-Tactical 2017 - Present Desert Tech directly attributed the most vocal criticism of the platform to the InRangeTV company in collaboration with the Forgotten Weapons Company that demonstrated numerous failures in the system that were identified to be from varying ammunition loads used in the gas system on December 13, 2018. Firearms » MDR - DESERT TECH The trigger included with the JARD MDR / MDRX Sear Assembly is crafted from aircraft-grade aluminum and this heat-treated component is built to last through many years of service. MDRX - Desert Tech Conversion Kit, SRS-A2 Covert 6.5 Creedmoor, 18in. Desert Tech MDRX JARD trigger pack : r/Bullpups - Reddit Firemodes [20], On January 9, 2020, Desert Tech announced the MDRx Rifle was available for sale. a 20” barrel, shark fin grip, 10 rd magazine, and a muzzle compensator. or 6.5 Creedmoor. * The 16" 5.56N/.223R MDRX Conversion Kits come with the Raiden Flash Hider. However, Desert Tech has done a good job of addressing that potential shortcoming by cleaning up the MDR's trigger. There's added versatility built in, though, because conversion . [26], In January 2023, Desert tech announced multiple MDRx Rifle updates to resolve rifle weaknesses. Side Eject, MDRx Conversion Kit, 5.56 Nato / 223R 16in. ~2014 BR's Review of JARD Desert Tech MDR / MDRX Trigger System. : +1-847-513-6201 2023 MDRx Shot Show Upgrades - Purchasable : r/DesertTech - Reddit MDRX Forward-Eject to Side-Eject Conversion Kit. ago Weight Period Designed MDRX Conversion Kit, 7.62N/308Win 20in. It is ultra-compact, perfectly balanced, intuitively ergonomic, easily concealable, and fast to deploy. Assault Rifle (in 5.56 and .300)Battle Rifle (in 7.62) Do Not Sell or Share My Personal Information. JARD trigger for the MDR | Sniper's Hide Forum Features of the Desert Tech MDRX Rifle - Desert Tech Firearms USA DESERT TECH MDR | Redwolf Airsoft less by .5 lbs. depending on adjustment and preference. Improvements to the firearm include the following: Improved impact-resistant polymer,[4] improved trigger,[4] improved gas block,[4] and a new "Ratchet" compensator. [22] These kits allow standard MDRX and MDR rifles to be classified and regulated as a short-barreled rifle (SBR) requiring the user to apply with the appropriate regulatory bodies before install of the conversion kit in their rifle. Forward Eject, MDRx Conversion Kit, 5.56 Nato / 223R 20in.