LMT Defense 18" Stainless Steel Caliber 7.62x51/.308 Barrel for MWS Upper Receivers - R-LM308B218S
Factory LMT precision barrel performance for MWS and MRP-H rifles.
Only 1 left in stock
LMT Defense 18″ Stainless Steel Caliber 7.62×51/.308 Barrel for MWS Upper Receivers
The LMT Defense 18″ Stainless Steel 7.62 NATO Barrel is a factory barrel assembly designed specifically for LMT MWS and MRP-H upper receivers. Built from stainless steel with 5R cut rifling, it provides a precision-oriented barrel option for compatible large-frame LMT rifles chambered in 7.62×51 NATO and .308 Winchester.
The 18-inch barrel uses a 1:11.25 right-hand twist and operates with LMT’s direct-impingement system. It comes with a low-profile gas block, straight gas tube, and A2 flash hider, providing the key barrel-mounted components needed to install it in a compatible MWS upper receiver.
Features
- Factory LMT MWS / MRP-H barrel assembly
- 18-inch stainless steel barrel
- 5R cut rifling
- 1:11.25 right-hand twist
- Chambered in 7.62×51 NATO / .308 Winchester
- Direct-impingement configuration
- Includes low-profile gas block
- Includes straight gas tube
- Includes A2 flash hider
Specifications
- Platform: LMT MRP-H / MWS
- Caliber: 7.62×51 NATO / .308 Winchester
- Barrel Length: 18″ / 457 mm
- Barrel Material: Stainless Steel
- Rifling: 5R Cut
- Twist Rate: 1:11.25″ RH
- Operating Method: Direct Impingement
- Gas Block: Low Profile
- Gas Tube: Straight
- Muzzle Device: A2 Flash Hider
- Manufacturer Part Number: R-LM308B218S
Compatibility Note
This barrel is designed for LMT MWS / MRP-H upper receivers and should not be treated as a standard AR-15 barrel. LMT states that its monolithic MRP-H barrels are proprietary to that platform. LMT also confirms that MWS rifles can use both 7.62×51 NATO and commercial .308 Winchester ammunition.
| Weight | 62.24 oz |
|---|---|
| Dimensions | 20 × 3 × 3 in |
| Finish | Stainless |
| Barrel Profile | Government / SOCOM |
| Cartridge Compatibility | 308 Win |
| Gas Block Journal | 0.75 |
| Barrel Length | 18 |
| Gas System Length | Rifle |
| Platform | AR-15 |
| Twist Rate | 1:11.2 |
| Muzzle Thread Pattern | 5/8×24 |
| MPN | R-LM308B218S |
Compliance
NFA (National Firearms Act) compliance is crucial for legal ownership and transfer of regulated firearms and accessories like short-barreled rifles, suppressors, and certain types of ammunition, ensuring adherence to federal regulations to avoid legal penalties and ensure responsible firearm ownership.