AR15 12.5" 300BLK Mr Barrel
$192.99 at MidwayUSA · 4 stores
In stock
Grade Combat 300 AAC Blackout 13.9" DRP Profile 5/8x24 1-7 Twist
Sons Of Liberty Gun Works · Barrels
No ratings yetBest price
$189.05at Brownells
Out of stock checked Oct 1, 2026
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| Brownells | $189.05checked 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 | $189.05 | $189.05 | $189.05 |
Since Sep 28, 2026.
About this part
The Grade Combat 300 AAC Blackout 13.9" DRP Profile 5/8x24 1-7 Twist is a 13.9" 300 Blackout barrel from Sons Of Liberty Gun Works with a mid-length gas system. One store lists it, Brownells at $189.05.
Fits and works with
- Caliber
- 300 Blackout · Shop matching ammo
- Bolt
- Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
- Gas system
- Mid-length · Handguards
- Muzzle thread
- 5/8x24 · Muzzle devices
- Barrel length
- 13.9" · Handguards
Specifications
- Manufacturer
- Sons Of Liberty Gun Works
- Platform
- AR-15
- Caliber
- 300 Blackout
- Gas system
- Mid
- Barrel length
- 13.9"
- Thread pattern
- 5/8 x 24
From the manufacturer
Sons of Liberty Gunworks makes some of the best combat-ready barrels on the market, and they're durable and versatile enough to run in a variety of configurations, especially suppressed or unsuppressed, without the need for an adjustable gas block. The company's Combat Grade AR-15 Barrels are duty ready and available in a variety of configurations for the AR-15 enthusiast or professional user. For those building or upgrading rifles chambered in 5.56 NATO, the SOLGW Combat Grade Barrel lineup can be had with a carbine-length gas system in 10.5- or 11.5-inch lengths. For those looking for a mid-length gas system, barrel lengths are available in 13.7-, 14.5- and 16-inch lengths. Mfg: Sons Of Liberty Gun Works
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