LMT Defense - 13.5" Chrome Lines 7.62 NATO Barrel - R-LM308B413
LMT DefenseThe LMT Defense 13.5" Chrome Lined 7.62 NATO MRP-H Barrel (R-LM308B413) is a mil-spec chrome-lined heavy-profile .308 barrel designed for the LMT MWS (Modular Weapon System) MRP-H upper receiver platform. Issued with NSN 1005-01-642-2355, this barrel delivers excellent reliability and longevity thanks to its chrome-lined bore, protecting the rifling from corrosion, heat, and accelerated wear during high-volume fire. At 13.5", this barrel is the shortest chrome-lined .308 barrel in LMT's MWS lineup, making it ideal for compact SBR configurations with full 7.62x51mm NATO capability.
- Part Number: R-LM308B413
- NSN: 1005-01-642-2355
- Platform: LMT MRP-H (AR-10/MWS heavy upper receivers)
- Caliber: 7.62x51mm NATO (.308 Winchester)
- Barrel Length: 13.5" (342 mm)
- Rifling Twist Rate: 1:10" RH
- Barrel Material: Chromoly steel, chrome-lined bore
- Operating Method: Direct impingement
- Gas Block: Low-profile gas block included
- Gas Tube: Straight gas tube included
- Muzzle Device: A2 flash hider included
- Compatibility: LMT MRP-H upper receivers (MWS/AR-10 .308 platform)
- Manufacturer: Lewis Machine & Tool (LMT Defense), Milan, Illinois, USA
Includes low-profile gas block, straight gas tube, and A2 flash hider. Barrel only — BCG sold separately. This barrel assembly is intended for use in NFA-regulated SBR configurations. A tax stamp from the ATF is required for SBR builds. Comply with all applicable federal, state, and local regulations.