Proof Research Carbon AR .223 Wylde Threaded Rifle Barrel 11.5 inch Carbine Length 1-7 Twist 5/8-24 Carbon
$729.99 at GunMag Warehouse · 2 stores
In stock
MCR 5.56x45 NATO 12.5" 1-7 Twist Heavy Barrel Assembly
FightLite Industries · Barrels
No ratings yetFits and works with
- Caliber
- 5.56 / .223 · Shop matching ammo
- Bolt
- Standard AR-15 (5.56 / 300 BLK / .350 Legend) · Bolt carrier groups
- Gas system
- Mid-length · Handguards
- Muzzle thread
- 1/2x28 · Muzzle devices
- Barrel length
- 12.5" · Handguards
Specifications
- Manufacturer
- FightLite Industries
Compatibility
- Caliber
- 5.56 mm NATO
- Chamber
- 5.56 NATO
- Gas system
- Mid-length
- Muzzle thread
- ½ x 28
- Platform
- AR-15
Dimensions and weight
- Barrel length
- 12.5"
Materials and features
- Twist rate
- 1:7
- Profile
- Heavy / HBAR
- Finish / lining
- Phosphate
- Color
- Black
Where to buy
| Store | Price | Availability | Buy | Add to build |
|---|---|---|---|---|
| GrabAGun Best price | $729.99Salechecked Nov 14, 2026 | Check store | Buy at GrabAGun | |
| Brownells 17.76% off · ends Nov 15 · exclusions apply | $729.99checked Nov 14, 2026 | Out of stock | Buy at Brownells | |
| OpticsPlanet | $729.99Salechecked Nov 12, 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 Sep 28, 2026.
Show the prices as a table
| Store | Latest | Lowest | Highest |
|---|---|---|---|
| Brownells | $729.99 | $729.99 | $729.99 |
| GrabAGun | $729.99 | $729.99 | $729.99 |
| OpticsPlanet | $729.99 | $729.99 | $729.99 |
Since Sep 28, 2026.
About this part
The MCR 5.56x45 NATO 12.5" 1-7 Twist Heavy Barrel Assembly is a 12.5" 5.56 / .223 barrel from FightLite Industries with a mid-length gas system. It's sold by 3 stores, all at $729.99.
From the manufacturer
ARES Defense MCR spare barrels are ready swap with your existing quick change barrel system. Barrels include adjustable gas system. Available in 16.25" or 12.5" lengths. Chambered in 5.56x45mm NATO & feature chrome lined, 1-7 twist bores. Muzzle include A2 flash hider & A 1/2-28 threads. Fit ARES Defense MCR weapon systems only. Mfg: Fightlite Industries
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