- SLR Rifleworks 5” Barrel Assembly  - NiB Barrel Extension - 1/6 Twist - M4 Feed Ramps - QPQ Corrosion Resistant Finish - SLR Rifleworks Black Linear Comp. - 5/8 X 24 Threaded...

- SLR RIFLEWORKS 5” Barrel Assembly  - 1/6 Twist - M4 Feed Ramps - QPQ Corrosion Resistant Finish - A2 Flash Hider - 5/8x24 Threaded Muzzle - M16 BCG Nitride - 4.25" SLR Rifleworks...

- 4150 CMV Melonite  - 1/7 Twist - M4 Feed Ramps - QPQ Corrosion Resistant Finish - A2 Flash Hider - 5/8x24 Threaded Muzzle - M16 BCG Nitride - 5.25" SLR Rifleworks Intrepid - Dry Film...

- 4150 CMV Melonite - 1/7 Twist - M4 Feed Ramps - Carbine Gas System with F-Mark Front Sight Base - QPQ Corrosion Resistant Finish - A2 Flash Hider - 1/2-28 Threaded Muzzle - M16 BCG,...

- 4150 CMV Melonite - 1/7 Twist - M4 Feed Ramps - Pistol Length Gas System .750 Low Pro Gas Block - QPQ Corrosion Resistant Finish - Flash Can Muzzle Device - 1/2 x 28 Threaded Muzzle - M16...