Best price
$474.95at CMMG
checked Oct 22, 2026
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| CMMG Best price | $474.95checked Oct 22, 2026 | Check store | Buy at CMMG | |
| OpticsPlanet | $409.99Salechecked Oct 22, 2026 | Out of stock | Buy at OpticsPlanet |
Prices and availability change often, so confirm on the store's site before you buy. We may earn a commission from these links.
Price history
Dashed line = out of stock. Tracking since Oct 17, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| CMMG | $474.95 | $474.95 | $474.95 |
| OpticsPlanet | $409.99 | $409.99 | $409.99 |
Since Oct 17, 2026.
About this part
The CMMG Barrel and BCG Kit 8in 4140CM SBN 10MM is an 8" 10mm barrel from CMMG. It's sold by 2 stores, from $409.99 to $474.95.
Fits and works with
- Caliber
- 10mm · Shop matching ammo
- Bolt
- 10mm · Bolt carrier groups
- Barrel length
- 8" · Handguards
Specifications
- Manufacturer
- CMMG
- Platform
- AR-9
- Caliber
- 10mm
- Barrel length
- 8"
From the manufacturer
CMMG Barrel and BCG Kit 8in 4140CM SBN 10MM. Unlike typical direct blowback systems our RDB uses a bolt that is forced to rotate slowing the BCG. This results in a lighter BCG for a lighter rifle and less felt recoil than a straight blowback system. Specifications for CMMG 10mm Barrel And Bcg Kit: Manufacturer: CMMG Color: Black Finish: No Fabric/Material: 4140CM Caliber: 10mm Auto Barrel Length: 8 in Barrel Profile: Medium Taper Barrel Twist Rate: 1-16 Flutes: No Weight: 2.1 lb Condition: New Firearms Threads Per Inch: .578x28 Package Contents: CMMG 10mm Barrel And Bcg Kit CMMG 10D424E: Barrel and BCG Kit 8in 4140CM SBN 10MM
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