LMT MRGG-A 6.5 Creedmoor - 14.5" - AR-10 SBR - 1x 20rd Magazine

The Lewis Machine & Tool MRGG-A 6.5 Creedmoor SBR brings LMT's MARS monolithic platform to a compact 14.5-inch short-barreled configuration — billet MARS monolithic upper, enhanced bolt carrier group, chrome-lined chrome-moly barrel, and left-side charging, chambered in the AR-10's benchmark long-range cartridge in an NFA-regulated package sized for duty, vehicle operations, and close-quarters use. Form 4 transfer required.

The LMT MRGG-A (MLK65145L-MARS-SR) is a semi-automatic 6.5 Creedmoor AR-10 pattern SBR with a 14.5-inch barrel, built on LMT's MARS monolithic billet upper and lower receiver system with a short rail configuration. Features LMT's enhanced bolt carrier group, chrome-lined chrome-moly barrel, left-side charging handle, and LMT's proprietary stock system. NFA short-barreled rifle — ATF Form 4 transfer required.

The SBR classification is what makes the 14.5-inch barrel configuration in 6.5 Creedmoor meaningful — without the NFA registration, a 14.5-inch 6.5 Creedmoor requires a pinned and welded muzzle device to achieve legal rifle status, which adds length and commits the platform to a specific muzzle device. As a registered SBR, the 14.5-inch barrel stands alone, and the operator can run any muzzle device — or no muzzle device — without permanence, and the overall package is as compact as the barrel length itself allows. 6.5 Creedmoor retains meaningful velocity and terminal performance advantages over 5.56 NATO even at 14.5 inches, and its higher BC projectiles maintain supersonic flight and usable energy at distances far beyond what a 14.5-inch 5.56 platform can match — making this the correct choice when the operational requirement is a compact, maneuverable platform that does not sacrifice the long-range capability the 6.5 Creedmoor provides. The MARS monolithic upper integrates the receiver and top rail into a single machined billet unit, providing a continuous, gapless rail surface from the receiver face through the handguard for a stable optic and accessory platform. LMT's enhanced bolt exceeds standard mil-spec fatigue life, and the chrome-lined chrome-moly barrel provides long-term bore durability for a hard-use SBR platform. The left-side charging variant accommodates left-handed operators and right-handed operators who prefer a support-hand charging stroke without modification.

Caliber: 6.5 Creedmoor. Barrel: 14.5 inches, chrome-lined chrome-moly. Platform: MARS monolithic billet upper and lower. Rail: short rail configuration. Bolt: LMT enhanced. Charging: left-side. Action: semi-automatic, AR-10 pattern. Finish: black. NFA: SBR — Form 4 transfer required.

SBR registration allows the 14.5-inch barrel without a permanent muzzle device — full muzzle device flexibility and the most compact overall length the platform allows. 6.5 Creedmoor maintains supersonic flight and usable energy at long range from 14.5 inches, outperforming 5.56 at distance in a comparably compact package. MARS monolithic upper provides a gapless continuous rail for stable optic mounting. LMT enhanced bolt exceeds mil-spec fatigue life.

The right compact 6.5 Creedmoor SBR for operators who need LMT's MARS platform precision and enhanced bolt longevity in a 14.5-inch NFA package — long-range cartridge capability in a duty and vehicle-sized form factor. Form 4 required.