Pistol Length Match 300BLK 6" 1-5 Twist Gunner Contour SS Bbl Nitride
$170.20 at Brownells · 4 stores
In stock
Best price
$174.95at CMMG
checked Oct 1, 2026
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| CMMG Best price | $174.95checked Oct 1, 2026 | Check store | Buy at CMMG | |
| OpticsPlanet | $169.99Salechecked Oct 1, 2026 | Out of stock | Buy at OpticsPlanet | |
| Brownells | $190.77checked Oct 1, 2026 | Out of stock | Buy at Brownells |
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 Sep 28, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| Brownells | $190.77 | $190.77 | $190.77 |
| CMMG | $174.95 | $174.95 | $174.95 |
| OpticsPlanet | $169.99 | $169.99 | $169.99 |
Since Sep 28, 2026.
About this part
The AR15 8.2" 300BLK Mr Barrel is an 8.2" 300 Blackout barrel from CMMG. It's sold by 3 stores, from $169.99 to $190.77.
Fits and works with
- Caliber
- 300 Blackout · Shop matching ammo
- Bolt
- Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
- Barrel length
- 8.2" · Handguards
Specifications
- Manufacturer
- CMMG
- Color
- Black
- Platform
- AR-15
- Caliber
- 300 Blackout
- Barrel length
- 8.2"
From the manufacturer
Direct replacement for the standard .223/5.56mm barrel converts your AR-15 to the high-performance 300 AAC Blackout (300BLK) cartridge. The 300 AAC lets you upgrade your rifle to 7.62 x 39 ballistics, while retaining the standard AR-15/M16 bolt, carrier, and magazine at its full capacity, with no additional modifications. 1-7" rifling accepts bullet weights from 110 gr to 220 gr, and 5/8"-24 muzzle threads accept popular AR-.308 flash suppressors and muzzle brakes. Three models available, 16", 12.5" and 8.2" long and treated inside and out with CMMG's "Wasp" nitriding process for outstanding resistance to wear and corrosion. 16" barr Mfg: Cmmg SPECS: Hardened 4140 chrome-moly steel, Wasp nitride finish, matte black .750" O.D. at gas port.5/8-24 muzzle threads.
Similar barrels
Pistol Length Match 300BLK 7.5" 1-5 Twist Gunner Contour SS Bbl Nitride
$170.20 at Brownells · 5 stores
In stock
AR-15 16" Bloodline Barrel Heavy Pistol 1-8tw 5/8-24 .300BLK
$169.20 at MidwayUSA · 3 stores
In stock
Performance Series 300 Blackout 8.3" Hanson Pistol W/Lo Pro
$168.99 at Brownells · 6 stores
In stock Sale
Ballistic Advantage Modern Series .300 BLK 1/7 4150 CrMoV - 16"
$171.00 at MidwayUSA · 8 stores
In stock
AR15 12.5" 300BLK Mr Barrel
$192.99 at MidwayUSA · 4 stores
In stock
Rating
No ratings yet
Log in to rate this part.
Comments
Please log in to read and leave comments.