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Griffin Armament built the GPM line to do more than hold a scope. This 30mm combo pairs a unibody base with matched rings at a 1.425" center height, giving you a clean, repeatable platform for precision and tactical rifles. Everything is machined in-house in Watertown, WI from aircraft-grade 6061-T6 aluminum, individually probed during manufacturing so each unit comes out dimensionally consistent. The Stanag 4694 recoil lug interface locks it to your rail and brings it back to zero every time you pull it off and reinstall.
The headline feature is Griffin's Accessory Interface Suite. The rings are split across two parallel but offset planes, which opens up five mounting surfaces: top, left, right, and 45-degree offsets on both sides. That means you can bolt on a red dot, laser, or other accessory wherever it makes sense for your setup, left or right handed, without piling on aftermarket rail sections. A dowel pin alignment system ties it all together for solid, accurate positioning.
If you shoot magnified glass but want a close-range option, the RTO plate system is worth a look. Griffin designed Rapid Transition Optic plates to sit a secondary non-magnified optic on the optical centerline with your stock comb, so a simple roll of the rifle gets you on target fast at a roughly 40-degree co-witness. The plates support a long list of micro red dots including Trijicon RMR and SRO, Aimpoint ACRO and T1/T2, Holosun, Vortex Venom and Viper, Leupold DeltaPoint, and plenty more, with a Picatinny adapter available too.
The 6061-T6 construction keeps weight down and matches the material of the optic it carries, while Type 3 Mil-Spec hardcoat anodizing handles wear and the elements. At right around 9.5 ounces with a 4.50" footprint, it strikes a good balance between rigidity and weight for a one-piece mount. Griffin backs these with a lifetime warranty, which tells you how they feel about the machining.
This model is built for 30mm main tube scopes. The 1.425" center height is a tall option that works well for larger objective bells and cheek weld on modern precision and tactical stocks. If you run a 34mm or 35mm tube, Griffin offers the GPM in those diameters and other heights as well.
It is a complete mount and ring combo, so the base and matched rings ship together as one unit. You also get all the ring and rail fasteners, a T15 Allen key, and a shim set to dial in the proper gap. Just bring your own torque wrench and you are ready to mount an optic.
AIS stands for Accessory Interface Suite, Griffin's modular mounting design. The rings sit on offset planes that give you five surfaces for accessories: top, both sides, and 45-degree offsets. Using the RTO plates you can add micro red dots like the Trijicon RMR, Aimpoint ACRO, Holosun, and many others, or add a Picatinny adapter for other gear.
Yes. The Stanag 4694 recoil lug interface is designed specifically for precise return to zero when you pull the mount off a Picatinny rail and put it back on. Combined with the dowel pin alignment and individually probed machining, it is built to stay consistent.
| UPC | 608870858709 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | GSM1.425H30MM |
| Length | 4.50" |
| Model | |
| Mount Height | 1.425" |
| Mount Type | Stanag 4694 |
| Style | Standard |
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