Dark mode is

Primary Weapons Systems AR-15 MK1, MOD 2-M Upper, 7.75" Barrel, 6.91" M-LOK Rail Complete 7.62x39 Upper

AR-10 Complete Upper Receiver

In stock

Ships from Distribution Facility



Primary Weapons Systems AR-15 MK1, MOD 2-M Upper, 7.75" Barrel, 6.91" M-LOK Rail Complete 7.62x39 Upper

$1,299.95

The PW MK1 MOD 2-M line, revamped for 2018, features the PWS long stroke piston system. While the internals remain the same as other PWS lines, the MK1 MOD 2-M offers a variety of features exclusive to this line. Starting with patent pending PicLok technology on the free float handguard, users are able to mount either Picatinny or MLOK accessories on the front of their firearm. Moving to the fully forged upper and lower receivers, the craftsmanship of this rifle can be easily recognized. Eliminating forward assist, adding a flared mag well and built-in trigger guard, among other specific add-ons, the MK1 MOD 2-M takes high end firearms to a new level. Sleek, compact and ready for anything, the MK1 MOD 2-M is sure to please esthetically and in-action.

The MK107 MOD 2-M is a must-have for NFA stamp collectors. The “Diablo” as it’s come to be known, is easily recognized by its 7.75” barrel topped with our CQB muzzle device. Designed to replace MP5 style weapons, this firearm was designed to be a sleek yet sturdy option for shooters wanting the most compact, while still reliable, AR available.



MK107 MOD 2-M Specs:

  • Caliber: 7.62x39
  • Weight: 3 lb. 9 oz.
  • Length: 17"
  • Piston System: Pistol
  • Velocity: 1944 ft/sec


MK107 MOD 2-M Features:

  • PWS long stroke piston operating system
  • 3-setting adjustable gas system
  • Forged upper receiver
  • Eliminated forward assist
  • CQB30 compensator
  • PicLok free float handguard
  • 1:10 barrel twist rate
  • Bravo Company furniture
  • Radian Raptor Charging Handle


MK107 MOD 1-M Includes:

  • Rifle service tool for gas adjustment
  • PWS sticker
  • PWS hat
  • PWS manual
More Information
SKU 18-2M107UF0B
Product Type AR-10 Complete Upper Receiver
Manufacturer Primary Weapon Systems
Barrel Length 7.75"
Caliber 7.62x39
Google Customer Reviews Google Customer Reviews