RGUNS
     Manufacturer - Dealer
          DoD Contractor
847-428-3569
140 North Western Avenue, Route 31
Unit B
Carpentersville, Illinois  60110



July 23rd, 2014



RGUNS Home > Rifles > Semiauto Rifles > AR-15 Type Rifles > Uppers > Profile









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TRR15 20" UPPER RECEIVERS: 6.8MM SPC II
Select Barrel Profile
About Our Barrels
The custom machined match barrels used in RGUNS rifles and uppers are made from 4150 chrome-moly vanadium steel manufactured in the USA. Each 6.8mm SPC II barrel is properly head spaced with an M4 feed ramp extension installed.

Barrels are particle tested, air gauged, concentrically cut and, where threaded, muzzle threaded -28 R.H. twist to accept flash hiders/suppressors, stressed relieved, turned on center to prevent accuracy robbing distortion when the barrel heats up, and hardened to 26-33 Rc giving the barrel a long life. 

Each barrel has an eleven degree crown, polished chamber and lapped bore, as well as a pulled-button rifling,  producing a superbly accurate bore diameter with uniform rate of twist. Fluted models feature unique fluting designs to improve rigidity and aid in barrel cooling.
Available Receiver Colors
Stripped Forged Upper, Black
RGUNS Stripped Upper, Olive Drab
RGUNS Stripped Upper, Dark Earth
Black
Olive Drab
Dark Earth

TRR15A3 Uppers
Heavy Profile Barrel
Twister Profile
Fluted Profile Barrel Twister Profile Barrel




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