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American Defense Mfg Lightweight QD RMR Low Mount Fits Trijicon RMR Footprint Optics Left Hand Quick Release Lever Black AD RMR LW L STD UPC 810008517956
Product Description
The American Defense Mfg Lightweight QD RMR Low Mount in Black (MPN: AD-RMR-LW-L-STD) is an ultra-durable, quick-detach optic mounting base engineered specifically for red dot sights utilizing the industry-standard Trijicon RMR footprint. Designed to place optics at a low-profile centerline height, this lightweight mount is an ideal mounting solution for shotguns, hunting rifles, submachine guns, AK receivers, and pistol caliber carbines (PCCs) where a minimal sight-over-bore dimension is paramount.
Precision CNC-machined in the USA from high-strength 6061-T6 billet aluminum and finished in a Mil-Spec Type III hardcoat anodized black treatment, the AD-RMR-LW-L-STD features lightened weight-reduction skeletonizing without sacrificing structural integrity. This specific model includes a left-hand orientation Quick-Detach Auto Lock™ Lever System. The left-side lever placement keeps the right side of the mount completely streamlined, eliminating potential snags against ejection ports or charging handles on right-hand ejection firearms.
Featuring ADM’s patented tool-free Auto Lock™ Lever system, the mount adjusts easily to fit both Mil-Spec and out-of-spec Picatinny or Weaver rail channels. The lever locks securely to prevent accidental opening under recoil while guaranteeing a true return-to-zero capability when detached and re-mounted. Backed by American Defense Manufacturing’s lifetime warranty, it represents a premium, rock-solid optic mounting upgrade for tactical and sporting applications.
Armorer Bench Notes & Real-World Staging Guidance:
Fitment Matrix: Fits optics featuring the Trijicon RMR footprint (e.g., Trijicon RMR / SRO, Holosun 407C / 507C / 508T, SwapFox Kingslayer/Liberty/Justice). Clamps to all standard MIL-STD-1913 Picatinny and Weaver rails. (Note: Features a left-hand lever configuration, placing the quick-detach clamp lever on the left side of the receiver for clean right-side ejection clearance).
- Perform a complete firearm safety check: drop the magazine, lock the action open, and visually/physically inspect the chamber to verify zero live rounds are present.
- Align the Trijicon RMR-footprint optic onto the top locating pins of the AD-RMR-LW-L-STD mount base.
- Apply blue Threadlocker (Loctite 242) to the included optic screws and torque them evenly to 12–15 in-lbs using an inch-pound torque driver.
- Open the left-hand Auto Lock™ lever on the mount interface and place the mount assembly onto your firearm's top Picatinny rail section.
- Push the Auto Lock™ lever closed to check clamping tension. If loose or overly tight, open the lever, depress the locking pin, and rotate the adjustment nut on the opposite side by hand until a firm, snug lever lock is achieved.
- Confirm the secondary safety lock latch snaps securely into place, verifying a rigid, zero-holding rail lockup before live firing.
Key Features
- Low-Profile Centerline Height: Delivers minimal sight-over-bore alignment ideal for shotguns, AK platforms, lever-actions, and PCCs.
- Left-Hand Auto Lock™ Lever System: Left-side QD lever orientation leaves the right side clear of charging handles and ejection ports.
- Tool-Free Tension Adjustment: Patented Auto Lock™ system easily adjusts by hand to fit standard or out-of-spec rail dimensions.
- Precision 6061-T6 Billet Aluminum: Lightweight skeletonized chassis provides extreme rigidity without adding unnecessary rail mass.
- Type III Hardcoat Anodized Finish: MIL-SPEC matte black surface treatment offers superior corrosion, scratch, and chemical resistance.
- Guaranteed Return-to-Zero: Engineered to hold precise zero even after repeated removal and reinstallation on the same rail slot.
Product Specifications
- Brand: American Defense Mfg
- Model/Series: Lightweight QD RMR Low Mount (Left-Hand Lever)
- MPN / SKU: AD-RMR-LW-L-STD
- UPC: 810008517956
- Optic Footprint Compatibility: Trijicon RMR / SRO / Holosun 407C/507C/508T
- Rail Interface: MIL-STD-1913 Picatinny & Weaver Rails
- Mount Profile: Low Profile
- Lever Orientation: Left-Hand Side (Standard Auto Lock™ Lever)
- Material: 6061-T6 Billet Aluminum
- Finish / Color: Type III Hardcoat Anodized Black
- Weight: 2.1 oz
- Country of Origin: USA
