Griffin Armament® M-LOK compatible SR rails (Suppressor Ready) allow up to 1.5” outside diameter silencers to be mounted inside the octagonal M-LOK rail. This provides suppressor aficionados a sleek, and compact overall length to AR15 type firearms.
Design objectives of this rail were to provide a suppressor compatible rail, with increased rigidity and durability over similar weight and profile current market options. A custom extrusion provides significant internal reinforcements to reduce flex when loading the carbine on the rail.

These reinforcements provide rigid mounting for IR laser aimers ensuring minimal POI shift when torque is applied to fore-grip type accessories, or when loads are applied to the rail such as practical shooting off barricades or when loading bipods for rapid follow up shots. Internal practical testing showed substantial reductions in POI shift with laser aimers versus competing "slim rails" that lacked this notable product feature.

The new SR rails features a close tolerance, heavy-duty, 7075 aluminum, T-6, type 3 hard coat anodized finish. The barrel nut can be easily installed to 35-85 ft/lbs using the included Griffin Armorers Wrench.  The new slip fit clamp design is extremely user friendly and does not require any shims or special timing methods. The clamp geometry in the rear section of the rail is low profile and ergonomically pleasing even for long durations of extended carry at static security positions. Flat head T15 torx screws should be tightened to 25/in pounds. M-LOK flats on each 45 degree surface allow for mounting of your favorite M-LOK accessories. A contiguous picatinny top rail ensures repeatable and accurate mounting for night vision and thermal systems.

If you are looking for a high quality, feature rich, American made rail system for your AR15 type firearm look no further than Griffin Armament® SR rails.

Key points and inclusions:

• Available Lengths 15", 13.5”, 12.5”, 11.5”, 10.5”, 9.5”, 7.5”
• 7 sides of M-LOK interfaces
• Contiguous 1913 Picatinny top rail
• Low profile, user friendly, clamp installation design
• Multi-Function Griffin Armorers wrench included
• 6061-T6, Type 3 hardcoat anodized SR Rail
• 7075, T-6, Type 3 hardcoat anodized, aluminum barrel nut

45 degree Picatinny QD swivel mount (pictured but not included)

Specs : 

• Length: 15"
• Height 2"
• Internal Diameter 1.54" (measured from inside of reinforcement spars)
• Width: 1.79"
• Weight Installed: 13.1 ounces