The LMT modular ambidextrous Rifle System (MARS ) lower receiver is engineered to provide ambidextrous functionality, incorporating controls such as the selector, magazine release and bolt catch and release. The receiver features an enhanced flared magazine well, with ambidextrous magazine and bolt catch mechanisms integrated directly into the design. These components are meticulously crafted to optimize ergonomic performance. The LMT DEFENSE Mars-L Stripped lower receiver is engineered to provide full ambidextrous functionality and is compatible with multiple calibers, including .204 Ruger, .300 AAC Blackout, 5.56x45mm and 6.8 SPC Engineered for durability and adaptability, this lower receiver is optimal for custom AR configurations, tactical operations and professional applications