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American Rifle Company built the M-Brace line to take the fuss out of mounting a scope while delivering the kind of rock-solid hold that serious rifles demand. These 34mm rings sit at the High (1.26") height, measured from the optical centerline to the top of the rail, which gives you the clearance needed for larger objective bells and bigger tactical turrets. They clamp onto any Picatinny (MIL-STD-1913) rail and are engineered to grip correctly even on rails that drift a little outside Mil and STANAG spec.
The clever part here is the split-ring design. Instead of fighting a stack of tiny cap screws while trying to keep your reticle straight, the M-Brace rings let you drop the scope in and keep everything aligned during install. The low-profile caps also leave your turrets clear and easy to read. Even under heavy recoil these rings hold firm without biting into or denting your scope tube, so your optic stays looking as good as the day you bought it.
These are CNC machined from high-strength 7075 aluminum alloy and finished with a matte-black anodized coating that shrugs off corrosion and glare. Stainless steel hardware is used throughout, including a high-strength 410 stainless cross bolt, so nothing on the mounting system is a weak link. Proudly made in the USA, the M-Brace represents an evolution of ARC's well-proven M10 rings that riflemen have leaned on for over a decade.
One thing worth knowing up front: ARC specs 55 in-lbs (6.2 Nm) on both the scope clamp and rail clamp screws. That's higher than a lot of rings out there, and it's by design. The M-Brace uses a single larger-diameter scope clamp screw rather than a bunch of small ones, so it needs that torque to generate equivalent clamping force. A quality torque wrench and a dab of oil or anti-seize on the threads will have you set up right and ready to hold zero.
These rings are built for scopes with a 34mm main tube diameter. Make sure your optic's tube measures 34mm before ordering, since ARC also offers 30mm, 35mm, and 36mm versions in this same line.
The 1.26" measurement is taken from the optical centerline down to the top of the rail. This High setting gives you solid clearance for larger objective bells and taller turrets, though the right height always depends on your specific scope and objective diameter. If you're running a smaller objective, the Low or Medium options may sit you closer to the bore.
The M-Brace uses a single larger-diameter scope clamp screw instead of several small ones, so it needs more torque to reach the same clamping force. That 55 in-lbs figure applies to both the scope clamp and rail clamp screws. Use a quality torque wrench and follow ARC's instructions rather than generic ring guidance to get it right.
No. The M-Brace is designed to grip firmly without marring or indenting the scope, even under heavy recoil. The split-ring design spreads the clamping load and keeps your optic looking clean while holding zero.
| UPC | 810094450120 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | MB-R-34-32 |
| Style | PICATINNY |
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