MARS-H SOPMOD COMPLETE LOWER RECEIVER The MARS-H brings the innovative design of our MARS-L to the MWSA(R) platform. The LMTA(R) Modular Ambidextrous Rifle System (MARSA(R)) lower receiver offers ambidextrous controls to include: selector, magazine release and bolt catch and release. An enhanced flared magazine well and ambidextrous magazine and bolt catch mechanisms are machined directly into the receiver and have been designed to function as ergonomically as possible. This lower receiver is designed with several unique LMTA(R) features to further enhance its durability and versatility. These features are: Two-stage trigger group, winter or enhanced trigger guard, ergo Mfg: Lmt Defense