KAK AR-9 Complete Upper Assembly 4"

$414.00

KAK Complete AR15 Upper Receiver - 9mm - 4" Barrel - 2.9" MLOK

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Delivery Policy

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Upper

Barrel Length- 4”
Barrel Material- 41V50 Button Rifled Barrel
Chamber 9MM NATO
Twist Rate 1:10
Muzzle Device Milspec A2 birdcage 1/2-36
Gas System- Blowback
Upper Receiver- Forged 7075 T6 Aluminum, Precision Machined to M16/M4 Spec
Handguard- 2.9”, High Quality 6061 T6 Material Mlok with Proprietary Clamping System and Heavy-Duty Barrel Nut
Charging Handle- Milspec with Enhanced Large Billet Latch

BCG
One piece BCG
Auto Profile Carrier Machined from Aircraft/ Bearing Quality 8620 Steel, Properly Heat Treated, Ground to Perfection, BlackNitride Finish by H&M
Firing pin is machined 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, nitride, precision staked using our hydraulic staking machine
Carrier key screws- Grade 8, Properly Heat Treated and staked