Add a BCG, CH, ETC, from drop down for a complete upper
Default configuration is an assembled upper with no BCG/ CH, ETC
Blem- Some barrels may have a cross pin slot for pinning a gas block
Chamber- 5.56 NATO
• Length- 11.5″
• Gas system- Carbine Length
• Threads- 1/2×28
• Finish- Nitride
• Twist- 1:7
• Gas Block- Low profile .750 Phosphate Finish
• Charging Handle- (If Selected) Milspec with Enhanced Large Billet Latch or milspec
• Upper Receiver- Forged 7075 T6 Aluminum, Precision Machined to M16/M4 Spec
• Handguard- 10.7″ High Quality 6061 T6 Material Mlok with Proprietary Clamping System and Heavy-Duty Barrel Nut
Weight 3.7
BCG (if Selected) chrome lined phosphate comes standard, K-SPEC suppressor optimized down vent 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
