“Faxon Firearms 10A863C16NGQ Big Gunner 8.6 Blackout 16″ Target Crown Steel Salt Bath Nitride 4150 Steel Barrel Fits AR10” has been added to your cart. View cart

YHM MINI QD MUZZLE BRAKE 9MM 5/8″-24
March 9, 2026
YHM RIFLE LENGTH GAS TUBE BLK
March 9, 2026CMMG 30D810A Barrel Sub-Assembly 300 Blackout 8″ Black Nitride Finish 4140 Chromoly Steel Material Pistol Length with Medium Taper Profile for AR-15
$194.66
CMMG 30D810A Barrel Sub-Assembly 300 Blackout 8″ Black Nitride Finish 4140 Chromoly Steel Material Pistol Length with Medium Taper Profile for AR-15
6 in stock
SKU: RSR|CMMG30D810A
Category: AR Barrels
Perfect for building your custom AR15 upper group. Comes with properly installed M4 barrel extension. All barrel sub-assemblies are properly headspaced.
| UPC | 815835016283 |
|---|---|
| Manufacturer | CMMG |
| Manufacturer Part Number | 30D810A |
| Barrel Length | 8" |
| Caliber/Gauge | .300 AAC Blackout |
| Length | 8" |
| Model | Barrel Sub-Assembly |
| Product Type | Barrel |
| Rate of Twist | 1:7" |





