One Horse M16 bolt carrier groups for 5.56/.223 and .300 BLK: a 9310 tool steel bolt and an 8620 AQ steel carrier in four finishes. 100% made in America.
SKU OH-UBC01UPC 850078799081
Same 9310 bolt and 8620 carrier.
Nickel Boron M16 BCG (5.56 / .300 BLK)Full Nickel Boron finish$129.99 MSRP Nickel Boron M16 BCG (5.56 / .300 BLK)Full Nickel Boron finishAvailable SoonNotify Me When Available| Bolt | 9310 tool steel |
|---|---|
| Carrier | 8620 AQ steel |
| Profile | M16 cut |
| Heat treatment | Full MIL-SPEC |
| Inspection | Magnetic Particle Inspection (MPI) |
| Lugs | Back of lugs chamfered |
| Extractor | S7, with spring, insert and O-ring installed |
| Gas key | Staked, with Grade 8 fasteners |
| Forward assist | Serrations |
| Caliber | 5.56/.223, .300 BLK |
| Materials | 100% Made in America |
| Warranty | Limited Lifetime |
| BCG | SKU | Finish | Price |
|---|---|---|---|
| Black Nitride | OH-UBC01 | Salt bath nitrided bolt, carrier and cam pin | $89.99 |
| Nickel Boron | OH-UBC02 | Full Nickel Boron finish | $129.99 MSRP |
| Gold TiN | OH-UBC03 | Full Gold TiN finish | $129.99 MSRP |
| Chameleon | OH-UBC04 | Full Chameleon finish | $129.99 MSRP |
Specs from the live One Horse product pages.
The bolt carrier group (BCG) rides inside the upper receiver. It strips a round from the magazine, chambers it, locks into the barrel extension and extracts the empty case. Every One Horse BCG uses the same steel, heat treatment and inspection. The finish is your choice.
The OH-UBC01 has a salt bath nitrided bolt, carrier and cam pin. It is the BCG installed in every One Horse complete upper.
Same 9310 bolt and 8620 carrier with a full Nickel Boron, Gold TiN or Chameleon finish. On these three, One Horse lists the bolt as shot peened. One Horse lists each of them for 5.56/.223 and .300 BLK barrels.
One Horse lists all four BCGs for 5.56/.223 and .300 BLK, so one bolt carrier group serves either caliber.
A BCG is a part and ships to your address. Check your state and local law before you order. Building a full upper? See One Horse AR-15 uppers.
All four One Horse M16 BCGs are listed for 5.56/.223 and .300 BLK.
Yes. .300 BLK and 5.56/.223 use the same BCG, so any One Horse M16 BCG works with either caliber. The barrel is what changes.
The finish. All four use a 9310 tool steel bolt and an 8620 AQ steel carrier with a staked gas key. Choose Black Nitride, Nickel Boron, Gold TiN or Chameleon.
No. A BCG is a part and ships to your address. Check your state and local law before you order.
Yes. One Horse complete uppers ship with the Black Nitride BCG installed, and the Gold TiN, Chameleon and Nickel BCGs are offered as installed upgrades on each upper's product page.
Yes. One Horse backs its BCGs with a Limited Lifetime warranty.
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