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Kak Industry
The Kak Industry AR-15 BCG M16 5.56/300 in black is a chrome-lined phosphate-finished bolt carrier group built for shooters who demand reliability without the premium price tag. This is a true workhorse — the kind of part that runs whether you're putting rounds downrange at the range, building a patrol rifle, or trusting it in a duty setup. Kak has engineered this BCG with the same attention to detail as their higher-end offerings, but positioned it as the dependable, no-nonsense choice for builders and shooters tired of paying unnecessary markups for proven performance.
Every component is purpose-built for longevity and consistent function. The carrier itself is machined from 8620 steel with proper heat treatment and ground to exact tolerances, and it features the M16 (full-auto) profile carrier — the same platform that's been proven in military and civilian service for decades. The single-piece billet-machined 4140 extractor is phosphate coated to resist corrosion and wear. Hard chrome plating on the 4340 cam pin and 8740 firing pin adds toughness where it matters most, while S7 tool steel pins handle the job of keeping everything where it belongs. The gas key is machined from 4130 billet steel, chrome lined and plated, then precision staked to spec. Even the carrier key screws are Grade 8 and properly heat treated — Kak doesn't cut corners on the small stuff.
Whether you're assembling an entry-level 5.56 build, upgrading a rifle you already trust, or stocking up, this BCG brings no-drama reliability to the job. The phosphate finish resists corrosion in field conditions, the chrome lining keeps things running smooth, and the 8620 carrier backbone is time-tested. This is the BCG that works quietly and doesn't ask for attention — exactly what you want from a critical part.
| Brand | Kak Industry |
| Product Type | Bolt Carrier Group |
| Caliber Compatibility | 5.56 NATO, .300 Blackout |
| Carrier Profile | M16 (Full Auto) |
| Carrier Material | 8620 Steel |
| Finish | Chrome-lined Phosphate |
| Extractor | Billet 4140 Steel, Phosphate Coated |
| Cam Pin | 4340 Steel, Hard Chrome Plated |
| Firing Pin | 8740 Steel, Chrome Plated, Precision Ground |
| Retaining Pins | S7 Tool Steel |
| Gas Key Material | 4130 Billet Steel |
| Gas Key Finish | Chrome Lined and Chrome Plated, Precision Staked |
| Carrier Key Screws | Grade 8, T25 Drive, Heat Treated |
| Color | Black |
This bolt carrier group is compatible with 5.56 NATO and .300 Blackout chambered AR-15 rifles. Both are direct impingement rifle cartridges that cycle reliably with the M16 carrier profile.
This BCG features the M16 full-auto carrier profile, which is the military-spec design. The profile itself is the same as used in selective-fire platforms, though the BCG is sold as a civilian component and is legal for civilian use in semi-auto rifles.
The bolt carrier group comes complete with all components: carrier, bolt (extractor and firing pin), cam pin, ejector, retaining pins, and gas key with screws. It's ready to install into a complete upper receiver.
Chrome-lined phosphate finish delivers excellent corrosion resistance and reliable function at a practical price point, making it the right choice for the working shooter who values dependability over cosmetics. The phosphate coating protects the steel while the chrome lining keeps the bolt running smooth without unnecessary cost.
Kak Industry
The Kak Industry AR-15 BCG M16 5.56/300 in black is a chrome-lined phosphate-finished bolt carrier group built for shooters who demand reliability without the premium price tag. This is a true workhorse — the kind of part that runs whether you're putting rounds downrange at the range, building a patrol rifle, or trusting it in a duty setup. Kak has engineered this BCG with the same attention to detail as their higher-end offerings, but positioned it as the dependable, no-nonsense choice for builders and shooters tired of paying unnecessary markups for proven performance.
Every component is purpose-built for longevity and consistent function. The carrier itself is machined from 8620 steel with proper heat treatment and ground to exact tolerances, and it features the M16 (full-auto) profile carrier — the same platform that's been proven in military and civilian service for decades. The single-piece billet-machined 4140 extractor is phosphate coated to resist corrosion and wear. Hard chrome plating on the 4340 cam pin and 8740 firing pin adds toughness where it matters most, while S7 tool steel pins handle the job of keeping everything where it belongs. The gas key is machined from 4130 billet steel, chrome lined and plated, then precision staked to spec. Even the carrier key screws are Grade 8 and properly heat treated — Kak doesn't cut corners on the small stuff.
Whether you're assembling an entry-level 5.56 build, upgrading a rifle you already trust, or stocking up, this BCG brings no-drama reliability to the job. The phosphate finish resists corrosion in field conditions, the chrome lining keeps things running smooth, and the 8620 carrier backbone is time-tested. This is the BCG that works quietly and doesn't ask for attention — exactly what you want from a critical part.
| Brand | Kak Industry |
| Product Type | Bolt Carrier Group |
| Caliber Compatibility | 5.56 NATO, .300 Blackout |
| Carrier Profile | M16 (Full Auto) |
| Carrier Material | 8620 Steel |
| Finish | Chrome-lined Phosphate |
| Extractor | Billet 4140 Steel, Phosphate Coated |
| Cam Pin | 4340 Steel, Hard Chrome Plated |
| Firing Pin | 8740 Steel, Chrome Plated, Precision Ground |
| Retaining Pins | S7 Tool Steel |
| Gas Key Material | 4130 Billet Steel |
| Gas Key Finish | Chrome Lined and Chrome Plated, Precision Staked |
| Carrier Key Screws | Grade 8, T25 Drive, Heat Treated |
| Color | Black |
This bolt carrier group is compatible with 5.56 NATO and .300 Blackout chambered AR-15 rifles. Both are direct impingement rifle cartridges that cycle reliably with the M16 carrier profile.
This BCG features the M16 full-auto carrier profile, which is the military-spec design. The profile itself is the same as used in selective-fire platforms, though the BCG is sold as a civilian component and is legal for civilian use in semi-auto rifles.
The bolt carrier group comes complete with all components: carrier, bolt (extractor and firing pin), cam pin, ejector, retaining pins, and gas key with screws. It's ready to install into a complete upper receiver.
Chrome-lined phosphate finish delivers excellent corrosion resistance and reliable function at a practical price point, making it the right choice for the working shooter who values dependability over cosmetics. The phosphate coating protects the steel while the chrome lining keeps the bolt running smooth without unnecessary cost.
