LMT Defense MRP-H M-Lok 12.5" AR-10 Stripped Upper Receiver

The LMT Defense MRP-H M-LOK 12.5" stripped upper receiver is the heavy-duty monolithic rail platform engineered specifically for large-frame AR platforms, precision-forged from a single piece of high-grade aerospace aluminum to deliver unparalleled rigidity and durability in demanding applications. This MRP-H variant features M-LOK compatible slots on all eight sides for lightweight, versatile mounting of accessories like bipods, lights, grips, and suppressors, while maintaining a continuous full-length Picatinny rail at 12 o'clock for optics and aiming devices. Designed for direct impingement setups, it utilizes LMT's proprietary dual locking lug system with T-30 Torx bolts for rapid, secure barrel changes without tools beyond a standard bit, ensuring minimal point-of-impact shift and true free-float performance.

Optimized for larger calibers including 7.62x51 NATO (.308 Win), 6.5 Creedmoor, .260 Remington, .243 Winchester, 7mm-08 Remington, and .338 Federal, this 12.5" upper pairs ideally with LMT monolithic barrels starting from 13.5" (or compatible lengths) for compact yet powerful configurations like battle rifles, DMRs, or suppressed short-barreled rifles. The enhanced "heavy" platform construction provides superior strength to handle increased recoil and sustained fire, making it a favorite among military, law enforcement, and precision shooters who demand zero retention under abuse. Its monolithic design eliminates traditional receiver-handguard flex, improves heat management, and supports quick caliber swaps for mission adaptability.

This stripped upper serves as the robust foundation for custom MWS (Modular Weapon System) builds, offering legendary LMT reliability in a package built to exceed combat standards. Whether configuring a versatile .308 carbine or a precision 6.5 Creedmoor setup, the MRP-H delivers modularity, accuracy, and toughness in one seamless unit.

Upgrade your large-frame AR platform today with the LMT Defense MRP-H M-LOK 12.5" stripped upper receiver—available now at Battlehawk Armory for exceptional performance and fast shipping.