DEFENDER-H STRIPPED LOWER RECEIVER The Defender-H lower receiver, also known as the original LMTA(R) .308 Modular Weapon System (MWSA(R)) lower receiver. This receiver offers ambidextrous selector and magazine release machined directly into the receiver and have been designed to function as ergonomically as possible. LMTA(R) MWSA(R) lower receivers are only guaranteed compatible with LMT upper receivers. Any other brand may not fit or function correctly. SPECIFICATIONS: Caliber: .260 Remington, 6.5 Creedmoor, 7.62x51 NATO Lower Type: Defender-H Mfg: Lmt Defense