Our innovative RAPTOR belt-fed upper receiver assembly is designed to interchange with standard AR/M4 type uppers and readily fits any MIL-Spec lower receiver without permanent modification to the host lower, and is rearward compatible to AR15/M16 models produced as early as 1963.

Once installed, the patented RAPTOR upper receiver system allows you to feed from standard box type AR15/M16 magazines or M27 linked ammunition. Spanning the capability range from the optic ready carbine through a lightweight support rifle. The RAPTOR can be user-configured in seconds without tools to adapt to virtually any mission profile. Utilize our Dual-Feed® technology at operator discretion, permitting unprecedented firepower and weapon flexibility.  

KEY FEATURES
Drop-On Upper Receiver Assembly that upgrades your AR15/M16/M4 type lower receivers or rifles
5.56 x 45mm NATO
16.25” Self-Regulating Quick- Change Barrel
1:7” RHT, ½”-28 TPI, CrMoV Nitrided
Short-Stroke Gas Piston Operation
Dual-Feed® - Accepts ALL AR15/M16 Magazines & M27 Linked Ammunition
Precision Machined 7075-T6 Billet Upper Receiver, Feed Cover and Charging Handle
Precision Machined Billet Steel Feed Tray 
Finish – Manganese Phosphate & MIL-A8625F Hardcoat anodize - Black
Full-Auto Bolt Carrier
Handguard Style – Lightweight Aluminum with MLOK style slots at 12, 6, 10, and 2 o'clock positions.
Optic Ready
Ships with Main Action Spring, Bolt Catch, Carbine Stock Spacer, (100) M27 Links & Operator’s Manual
Made In USA