R-10 Uppers

R-10 Bull Moose Upper Receiver Group


R-10 Bull Moose Upper Receiver Group


Low Profile Picatinny

The R-10 is the first in a new generation of AR-style Lightweight Upper Receiver Groups (URG). Utilizing unique magnesium alloys, this URG sheds weight without compromising integrity. Chambered in 8.6 Blackout the R-10 Bull Moose URG weighs less than many AR-15 URGs. Built from the ground up, focusing on hunters’ needs, the R-10 does not compromise accuracy or durability while weighing either 4.4 and 4.7 lbs depending on the bolt carrier group selection. Designed to be compatible with SR25/DPMS Lower Receivers, the R-10 comes standard with a Cerakote® finish, and premium components such as the JP High Pressure Bolt Carrier Group and Radian® ambidextrous charging handle. Whether it’s a day at the range or a once in a lifetime hunting trip, the R-10 will let you travel light and roam far™.


About This Product



16" Barrel
4.4 Lb. with Low Mass Steel BCG
4.7 Lb. with Full Mass Steel BCG


8.6 Blackout


Flat Dark Earth


16" Big Gunner Profile, 1:3 Twist


JP High Pressure Full Mass Bolt Carrier
JP High Pressure Low Mass Bolt Carrier

Gas System

Carbine Length, Direct Impingement

Gas Block

.875" Adjustable, Bleed Off, 30 Position


12.5" M-LOK® Full Picatinny

Muzzle Device

Titanium Thread Protector. Thread Type: M18x1.5

Charging Handle

Radian Raptor Ambidextrous

Overall Length

25 1/8"




  • UPPER RECEIVER: DPMS GEN 1 Compatible, Low Profile. CNC Machined Roam Magnesium, Protected by TAGNITE, Finished with Cerakote. Features Dust Cover and Molded Brass Deflector. Forward Assist is Optional
    • Forward Assist BCG: JP Full Mass High Pressure Steel BCG, QPQ Black Nitride Finish
      • 9310 Tool Steel Bolt, Stainless Steel Full Mass Bolt Carrier, Forward Assist Serrations, QPQ Black Nitride Finish
    • Smooth Sided BCG: JP Low Mass High Pressure Steel BCG, QPQ Black Nitride Finish
      • 9310 Tool Steel Bolt, Stainless Steel Full Mass Bolt Carrier, QPQ Black Nitride Finish
  • CHARGING HANDLE: Radian Ambidextrous Raptor-LT 7.62 Charging Handle, 7075 Aluminum, Type III Hard Anodize
  • BARREL: Faxon 16″ Big Gunner Profile, 8.6 Blackout, 4150 CMV, Nitride Finish, 1:3 Twist Rate, Magnetic Particle Inspected
  • GAS SYSTEM: Carbine Length, Direct Impingement
  • GAS BLOCK: Superlative Arms Adjustable .875″ ID, 30 Position, Patented Bleed Off Mechanism, Low Profile, Melonite Finish
  • MUZZLE DEVICE: Titanium Muzzle Protector. Thread Type: M18x1.5
  • HANDGUARD: Free Floating 12.5” Roam Magnesium Full M1913 Rail, M-LOK, Two QD Sling Mounts, Protected by TAGNITE, Finished with Cerakote