LEFT HAND
Chamber- 338 ARC
• Length- 10.5″
• Gas system- Pistol Length
• Threads- 5/8-24
• Finish- Nitride
• Twist- 1:8
• Gas Block- Low profile .750 Phosphate Finish
• Charging Handle- Milspec with Enhanced Large Billet Latch
• Upper Receiver- Forged 7075 T6 Aluminum, Precision Machined to M16/M4 Spec
• Handguard- 9.8″ High Quality 6061 T6 Material Mlok with Proprietary Clamping System and Heavy-Duty Barrel Nut
KAK recommends 400 legend mags for these barrels to function best with the 307 subsonic ammunition bullet profile
BCG chrome lined phosphate comes standard, K-SPEC Enhanced BCG upgrade available
- M16 Auto Profile Carrier Machined from Aircraft/ Bearing Quality 8620 Steel, Properly Heat Treated, Ground to Perfection
- Bolt is machined from a single piece aircraft/bearing quality 9310 steel, heat treated properly, precision ground, Shot Peened and MPI’d
- Firing pin is machined to the mil-spec print from 8740, precision ground, and chrome plated
- One Piece Billet Fully Machined Enhanced Extractor, Phosphate coated for Increased reliability and corrosion resistance
- S7 tool steel ejector and extractor retaining pin
- 4130 Gas Key, precision staked using our hydraulic staking machine
- KAK Carrier Key Screws- T25 drive, Grade 8, Properly Heat Treated
All KAK complete upper receivers are test fired for feed and function using commercially loaded ammunition
Note- We gas our barrels to run subsonic ammunition with a suppressor, a suppressor is required for full functionality when shooting subsonic rounds.
If you plan to use a suppressor with a larger bore (hybrid46 etc) please contact us before ordering as you will need a larger gas port.
