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This is the same bolt carrier group Wilson Combat drops into their own custom-built rifles, sold as a standalone assembly so you can put that level of quality into your own build. It's a complete, ready-to-run BCG that drops right into any quality mil-spec upper chambered in 5.56 NATO, and thanks to its case head design it also plays nice with rounds like .223 Rem, .300 Blackout, .204 Ruger, 300 HAM'R, and 7.62×40 WT.
The bolt is precision machined from Carpenter 158 steel and shot peened for added strength, then magnetic particle inspected and randomly batch high pressure tested to weed out any weak links. You get a tool steel extractor and ejector with the correct extractor spring, and the extractor itself is 4140 gun quality, annealed, cold drawn steel per mil-spec. These are the details that separate a bolt that lasts through thousands of rounds from one that lets you down.
The 8620 steel carrier is parkerized outside and chrome lined inside, with forward assist cuts and a full-auto profile. That extra mass helps smooth out the cycle, which pays off on carbine-length and shorter gas systems, short-barreled setups, and suppressed guns where you want a slower, more controlled cyclic rate. The gas key is chrome lined, phosphated, and heat treated to GI spec, secured with Grade 8 fasteners and properly staked by hand during final inspection so it won't loosen up when you need it most.
If you're building an AR from a stripped upper or replacing a tired factory carrier, this is a straightforward upgrade that takes the guesswork out of the equation. Wilson Combat has been building serious fighting guns since 1977, and this BCG carries that reputation into a part you can install yourself in minutes.
It's a complete, ready-to-run bolt carrier group. The bolt comes assembled with the extractor, ejector, extractor spring, and firing pin, and the gas key is already staked to the carrier. You can pull it out of the box and drop it straight into your upper.
Yes. Because it uses a 5.56 case head bolt face, it works with any quality AR round built on that case head, including .223 Rem, .300 Blackout, .204 Ruger, 300 HAM'R, and 7.62×40 WT. If your barrel is chambered for one of those, this BCG will run it.
The full-auto carrier is slightly heavier with a different external profile, giving you more mass and a lower cyclic rate. That extra weight is a benefit on carbine-length and shorter gas systems, short-barreled rifles, and suppressed builds. Both types are considered fully interchangeable, so you won't have any function issues running the full-auto version in a standard semi-auto rifle.
It is. Wilson Combat secures the gas key with Grade 8 fasteners and stakes it by hand during final inspection. Proper staking keeps the key from working loose under recoil, which is one of the most common causes of gas system trouble in an AR.
| UPC | 810025500719 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | TRBCA |
| Color | Black |
| Model | |
| Product Type | Bolt Carrier Group |
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