KAK COMPLETE AR15 UPPER RECEIVER – 7.62×39 – 16″ BARREL – 13″ MLOK
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KAK Complete AR15 Upper Receiver in 7.62×39
The KAK COMPLETE AR15 UPPER RECEIVER is a configured upper assembly chambered in 7.62×39 and designed for compatible AR15-platform firearms. It combines a 16-inch button-rifled barrel, carbine-length gas system, forged aluminum receiver, and 13-inch M-LOK handguard in one assembly.
KAK Industry manufactures this upper with a 41V50 chrome-moly-vanadium steel barrel featuring a protective nitride finish. Its 16-inch length provides a conventional rifle configuration, while the 1:9.5 rifling twist is specified for the 7.62×39 chambering. The barrel terminates in 5/8-24 muzzle threads and is listed with a military-style A2 birdcage muzzle device.
Receiver and M-LOK Handguard
The KAK COMPLETE AR15 UPPER RECEIVER uses a forged 7075-T6 aluminum receiver precision-machined to M16/M4 dimensional specifications. Surrounding the barrel is a 13-inch handguard manufactured from 6061-T6 aluminum.
The handguard incorporates M-LOK attachment slots and KAK Industry’s proprietary clamping system with a heavy-duty barrel nut. Its upper Picatinny rail provides mounting space for compatible sights and accessories. Accessory compatibility should be verified using the specifications supplied by the relevant manufacturer.
Barrel and Operating-System Details
This upper employs a carbine-length gas system with a low-profile .750-inch gas block. Its barrel extension incorporates M4-style feed ramps. A military-specification charging handle with an enlarged billet latch is also listed as part of the configuration.
Bolt-carrier-group specifications can vary according to the option selected. KAK lists a standard chrome-lined phosphate BCG as the default, with other configurations potentially available. The standard carrier uses an M16 profile and 8620 steel, while the bolt is manufactured from 9310 steel and is described as shot-peened and magnetic-particle inspected.
Main Specifications
- Platform: AR15
- Chambering: 7.62×39
- Barrel length: 16 inches
- Barrel material: 41V50 steel
- Finish: Nitride
- Twist rate: 1:9.5
- Gas system: Carbine length
- Gas-block diameter: .750 inch
- Muzzle threads: 5/8-24
- Handguard: 13-inch aluminum M-LOK
- Receiver: Forged 7075-T6 aluminum
- Barrel extension: M4 feed ramps
- Charging handle: Enhanced large billet latch
- Muzzle device: A2-style birdcage
KAK states that its complete uppers are test-fired using commercially loaded ammunition to check feeding and function. Nevertheless, compatibility between the KAK COMPLETE AR15 UPPER RECEIVER and any lower receiver, magazine, bolt, or ammunition must be confirmed before operation.
Installation and safety inspection should be completed by a qualified gunsmith. Keep the firearm unloaded, remove ammunition from the work area, and ensure that any configuration involving the KAK COMPLETE AR15 UPPER RECEIVER complies with applicable federal, state, and local regulations.
