M4E1 Threaded Complete Upper, 14.5" 5.56 Mid Barrel,R-ONE 12" M-LOK HG - Anodized

This complete upper includes our R-ONE Handguard. The R-ONE handguards are designed with size and weight in mind, while still providing plenty of real-estate to accommodate any attachment needs the end user may have. Includes: M4E1 Threaded Assembled Upper Receiver R-ONE Handguard 14.5" 5.56 Mid-Length CMV Barrel w/ Pinned Gamma 556 Low Profile Gas Block and Mid Length Gas Tube Product comes assembled This complete upper does not include BCG or Charging Handle. These products may be selected as add-ons under the Finish Your Build tab M4E1 Threaded Upper Receiver Features: New enhanced forging that gives the upper receiver a "billet look" New picatinny profile that blends seamlessly with our Enhanced Series Handguards M4 Feedramps .250 takedown pin holes Laser engraved T-marks Includes port door and forward assist installed R-ONE Handguard Features: Full top picatinny rail for optional attachments Quick disconnect sling socket at the 3, 6 and 9 o'clock positions Compatible with low profile gas blocks 1.3” Inside diameter 1.5” Outside diameter Compatible with mil-spec AR15 upper receivers and barrels 14.5" 5.56 Mid-Length Barrel w/ Pinned Gamma 556 Features: Chamber: 5.56 Length: 14.5" Twist: 1 in 7 Threading: 1/2"x28 Material: Chrome Moly Vanadium Finish: QPQ corrosion resistant finish both inside and out Gas Block: .750 Gas Port: .0785 Gas System Length: Mid Weight: 26oz M4 Barrel Extension HP and MPI Tested