34mm SPRM™² Cantilever Mounts 15MOA (All Heights)

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GRIFFIN ARMAMENT is a company founded by two Army Infantry sniper qualified combat veterans. Although Griffin is best known for its signature reducing sound suppressors, which are also coveted sniper tools, founders Austin and Evan have combined their lifelong passion for precision rifle shooting, and nearly a decade of notable research and development into a new product line, The Superior Precision Rifle Modular Mounts (SPRM)™².

SPRM™² mounts allow the incorporation of the ACCESSORY INTERFACE SUITE (AIS™) of products, which brings ambidextrous modularity and universal accessory support to the precision optics mount marketplace. The unique patented design splits the rings on two parallel but offset planes allowing accessories to be mounted on 5 AIS™ mounting surfaces. This system affords left and right sides, left and right 45-degree surfaces, as well as the top surface to be used for accessory interfaces. The GRIFFIN SPRM™² mounts bring unsurpassed flexibility and utility to the discriminating user. Left-handed or right-handed shooters are equally supported with the SPRM™ mounts and accessories.

A heavy emphasis on anatomically correct positioning of optics was placed on AIS™ products, leading to the development of the RAPID TRANSITION OPTICS plates. RTO™ plates position secondary non-magnified optics on optical centerline relationship with the stock comb for comfortable, rapid, targeting with a simple roll of the host firearm. These plates currently support: Aimpoint Acro, T1/T2, H1/H2, Comp m5, Sig Romeo, Vortex Spark, Trijicon RMR , SRO, Holosun HE507C HS407C, HS508C, Leupold Deltapoint, J point, Optima, Dr optic, Meopta, Insight microdot, Burris Fastfire, vortex venom, and viper, CMORE STS, RTS, STS2, and vortex razor. Picatinny RTO™ plates are also offered.

Flat mount AIS™ products support a myriad of optics as well as a picatinny interface, Wilcox Raptar Mount, and Simrad Adaptor Plate. Other accessories will be developed to support future market technology, keeping the system at the forefront of the precision space.

SPRM™² Mounts Feature :

  • AIS™ technology (Accessory Interface Suite) Allowing the user to mount accessories wherever they desire. 
  • RTO™ accessory support (ability to mount Rapid Transition Optic plates to the system for a 40° co-witness to the primary optic)
  • Ambidextrous support
  • Unibody construction
  • 12 (qty), 8-40 T15 fasteners for ring clamping 
  • 4 (qty), 10-32 fiber lock patched T15 fasteners for rail clamping 
  • Individually probed during the manufacturing process for peerless dimensional consistency
  • Stanag 4694 Compliant attachment, for precise return to zero
  • Type 3 milspec hardcoat anodizing
  • Lifetime Warranty
  • 6061 T6 aluminum 
  • Utility patented to support future technology development in the electro-optics industry 
  • Made in the USA


Although the emphasis of the SPRM™² mounts are on the utility they provide, much care and attention was also given to the engineering, precision, and durability of the mounts themselves. Unlike many market offerings which emphasize manufacturing ease, often bolting split rings to a base adapter, the SPRM™² foundation is a unibody base that cradles the optic (show optic in base without top rings) eliminating extraneous parts and interfaces which are often traceable to loss of zero retention, or tolerance stacking and subsequent loss of interfacing accuracy. A precision rifle becomes a battle rifle with loss of zero, and serious precision shooters should not tolerate it.

SPRM™² mounts are manufactured in the USA at Griffin’s Wisconsin manufacturing facility. Mounts are machined on state-of-the-art multi-axis CNC equipment from solid aircraft-grade aluminum bar stock. Manufacturing in house provides the ability to control quality at levels impossible in contract manufacturing. The geometries of Griffin SPRM™² mounts are machined to part datums probed on each part. Prior to machining, costly manufacturing time is dedicated to each part with Renishaw probe strategies coupled with Renishaw RTS set tool magazines, which ensure critical geometries are machined to positional accuracies of +-.0002”, rather than depending on human loading accuracy in a much looser relationship to workholding based datums like traditional optic mount industry manufacturing processes. Bringing Aerospace industry segmented production engineering concepts and inspection equipment to Optics mounts enhances the state of optical mount quality. This persistent dedication to quality ensures that the mount quality theory and the actual production mount quality are inseparably linked for uncompromising, superior precision.

In an industry space where raw extrusion, job shop quality, and an emphasis on efficiency over quality are normal, why does Griffin bring a wasteful level of manufacturing time and technology to Optic mounts? Because these aren’t just typical market, job shopped, optic mounts. These are Griffin Armament Superior Precision Rifle Modular Mounts. Gear made by snipers for everyone, SPRM™² mounts are the next generation of sniper grade, precision rifle optic mounts.





Additional Details

10.2 oz


3 Reviews

  • 5
    34mm SPRM mounts

    Published by Janusz Stojanowski on 15th Mar 2021

    excellent product ,very helpful service .

  • 5
    Great product and company

    Published by John on 3rd Feb 2021

    Not only is the product well made, the company has great customer service.

    What I've noticed is that a company's true colors show when things didn't go as planned. In this case it was a simple mistake, we all make them. The wrong mount was sent out. Not a big deal, we all have grabbed the wrong thing heading out or packing. It is how that is dealt with that matters.

    In this case, how I expected it to be dealt with was the opposite of what happened. Ina good way.

    I expected to be sent a response a day or two after I emailed them telling me to print out this label, repack the item and send it back. Once they got it, the exchange would be sent out.

    Instead I got a polite, I would say friendly, response in about ten minutes, and about a hour after that I had a email saying the exchange was already packed an mailed. Not only mailed, mailed with a return label and packing for the one that had been sent out. That is excellent customer service.

    Okay, now the mount itself. Out of the box, the machining and finish are excellent. Not a machine mark anywhere. No clamping marks, nothing. Just smooth finish on the material and a even coating over that. Installation was simple and easy. They even have the torque settings marked on the mount. Clearly marked. No sanding to get the rings aligned, no pinching on the scope anywhere. Screw holes were lined up and square.

    As I just received it, I can't say how it will hold up over time. From what I can see, it will be a long lasting piece of gear.

  • 5
    So Far, so good!!

    Published by Todd Holmes on 22nd Jul 2020

    I haven't gotten a chance to use it yet, but it looks awesome mounted and installation was a breeze! Looking forward to sight in and testing return to zero! Thanks Griffin!

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