SR M-LOK Rail 11.5"

Now: $179.95
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(4 reviews) Write a Review

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 - price and inclusions:

  • MSRP from $179.95
  • Available Lengths 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: 11.5"
  • Height 2"
  • Internal Diameter 1.54" (measured from inside of reinforcement spars)
  • Width: 1.79"
  • Weight Installed: 9.9 ounces
Gas Block and Furniture Included?:
Type Of Part:


4 Reviews

  • 4
    Very nice piece

    Published by CJ on 1st Jul 2024

    Very nice piece, sturdy and looks like it will hold up well. The finish doesn’t look cheap. My only reason for taking a star was the 45* QD in the picture is not included. Yes the description says that, but really who reads all the way to the bottom? It wasn’t till after I received my package and went back to read the “fine print” did I realize it wasn’t included

  • 5
    Excellent rails

    Published by B.Keller on 29th Nov 2022

    So far I have purchased 2 of theses rails one at 11.5 and 13.5. Easy to install, durable and never had any issues with attachments. Griffin Armament I appreciate your business.

  • 5

    Published by SPIN on 18th Jul 2022

    Top Notch!

  • 5
    Exactly what is needed when suppressed

    Published by Brock on 13th Jun 2022

    My wife and I both got one of these to replace our stock M-Lok rails so we could have suppressor coverage. The boxes include everything you need and the tool for adding the barrel nut haz zero play or slip when tightening. The only thing I suggest is not to forget getting the grease for the barrel nut. Hit Amazon and get it quick. The rails have a snug clean fit and when a suppressor is inside, the look is seemless. Install is so easy that my wife and I got them both installed in 20-30 minutes. For reference we have YHM Turbo K V2 suppressors. Couldn't be happier with the ease of install, fit, and appearance.