LMT Defense Rifle Barrels for Sale

Lewis Machine & Tool Company (LMT Defense) of the United States built its rifle-barrel standing around the Monolithic Rail Platform, debuting user-swappable AR barrels in 2004 for small-frame rifles and expanding the concept to the large-frame MWS/MRP-H in 2009. Purpose-built for LMT’s patented MRP quick-change interface, these barrels secure with two T30 fasteners for operator-level swaps of length, caliber, and gas system (direct impingement or piston), and are produced to tight tolerances with a 1.5 MOA acceptance, proof-fired and MPI-inspected, cryogenically treated, and offered with angled gas ports in chrome-lined CMV or stainless 5R-cut options across both platform sizes.