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Desert Tech MDRX Mircon .223 Wylde Side Ejection Short Barreled Rifle Kit (NFA)


Please Note: Once assembled, this is considered a Short Barreled Rifle and is regulated under the National Firearms Act (NFA). It is the customer's responsibility to be aware of and comply with all applicable laws and regulations regarding the ownership of this Desert Tech MDRx Micron Short Barreled Rifle Kit.

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Get notified when Desert Tech MDRX Mircon .223 Wylde Side Ejection Short Barreled Rifle Kit (NFA) is back in stock

Kit Components

MDRx Side Eject Chassis

Side Ejection

MDRx Conversion Kit

FFL Restrictions
FFL Requirements
This item can only be shipped to a Licensed Federal Firearms Dealer. Please see our Shipping Policy to review firearms shipping requirements.
Export Restrictions
Government Export Restriction
This item may be regulated for export by the U.S. Department of State or the US Department of Commerce. Please see our Export Policy.
ITAR Restrictions
ITAR Product
By adding to cart, I understand, acknowledge, and agree to the Export Policy. I am a US Person, and I do not intend to export this product. Please see our Export Policy.
Export Disallowed
No Exports
Due to government regulations and/or manufacturer stipulations we are unable to export this item outside of the United States. Please see our Export Policy.


New for 2020, the Desert Tech MDRX, takes the company’s revolutionary bullpup rifle design to the next level. MDRX rifles now feature an upgraded polymer resin formula for enhanced durability against high impact falls. Additionally, gas block drainage on the MDRX has been improved to dramatically increase reliability after submersion in mud and water. The trigger of the MDRX has been improved, providing a lighter pull with less creep. All MDRX rifles now feature the new Ratchet Compensator, which provides excellent control and recoil reduction without subjecting the shooter to gas blowback.

Built on a gas piston system and featuring a compact bullpup design, the MDRX flawlessly combines functionality, modularity, and ergonomics. The new MDRX-SE now allows for traditional side ejection and offers nearly a half pound in weight savings over forward ejection MDRX rifles. MDRX-SE rifles can easily be converted to left or right configurations and forward ejection conversion kits are available. The rifle features a full length Picatinny rail that extends to the end of the handguard as well as industry standard M-Lok attachment points. The MDRX-SE is available chambered for .223 Wylde.

Features of the Desert Tech MDRX Rifle

  • Improved Trigger
  • Side Ejection
  • Face Panel Sealing Gasket
  • Easy Access Adjustable Gas System
  • Ratchet Muzzle Break (Raiden Flash Hider for Micron)
  • M-Lok Compatible
  • Ambidextrous Design

MDRx Side Ejection rifles are only compatible with Desert Tech MDRx SE conversion kits. MDRx Side Ejection rifles can be converted to Forward Ejection by installing this FE Upgrade Kit.


  • Caliber:.223 Wylde (5.56 NATO & .223 Remington)
  • Weight:7.35 lbs.
  • Rifle Overall Length:23.43"
  • Action:Gas-Piston Semi-Automatic
  • Trigger:2-Stage Trigger
  • Safety:Selector Switch
  • Rifle Barrel Length:11.5"
  • Rifle Barrel Twist:1:7"
  • Barrel Thread Pitch1/2x28
  • Rifle Stock:MDRx Side Ejection Chassis - FDE or Black
  • Scope Mount:Picatinny Rail
  • Magazines Included:(1) 30rd
  • Iron Sights No
  • Caliber or Gauge:.223 Wylde
  • HandednessAmbidextrous
  • Item ConditionNew
  • Product TypeRifles

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