Product Description
The TNTE M4 URG RIS3 Upper Receiver Group features the Rail Interface System (RIS III), This two-piece, free-floating rail system allows the mounting of devices like a M203 grenade launcher without influencing the barrels harmonics, eliminating problems like wandering point of impact that plagued other mounting designs. The two-piece design also allows for partial disassembly of the rail to aid in cleaning around barrel without completely removing the entire rail system. The weight of anything attached to the RISIII rail system is fully supported by a sturdy bolt-up system, using 6 grade 8 bolts, leaving the barrel completely free floating for best possible accuracy and dependability. THESE ARE CUSTOM UPPERS AND SUBJECT TO AVAILBILITY FROM SUPPLIERS FOR BARRELS AND HANDGUARDS.
MATERIALS CONSTRUCTION
- BARREL: Chrome Moly Vanadium Steel, QPQ, 1:7 twist, 14.5″ M4 Profile
- UPPER RECEIVER: Mil-Spec with Indexing Marks and M4 Feed Ramps. CNC Machined of 7075-T6 Aluminum, Type III Hard Coat Anodized
- MUZZLE DEVICE: Surefire Warcomp, 17-4 PH Stainless Steel, Salt Bath Nitride Finished, pinned and welded to Barrel
- GAS SYSTEM: Pinned Low Profile Gas Block CNC Machined of 4140 hardened steel and Mil-Spec Heavy Phosphate Coating, mid length, Direct Impingement
- HANDGUARD: Daniel Defense M4A1 Rail Interface System (RIS) III, CNC Machined of 6061-T6 Aluminum, Type III Hard Coat Anodized FDE
- SIGHTS: Sold Separately
- Made in the USA!
