Serrated Steel Block .75 Hole

The Serrated Steel Block .75 Hole by U-B MACHINE is a precision-engineered mounting component built for tactical shooters, gunsmiths, and armorer operations requiring repeatable, secure fastening solutions. This compact steel block serves as a foundation for mounting optics, rail systems, and aftermarket accessories on rifles and pistols where standard picatinny attachment points are insufficient. Purpose-designed for professional and military applications, this component enables customization of weapon platforms that demand absolute reliability under field conditions.

Constructed from hardened steel with a serrated top surface, the block provides superior grip and indexing when paired with optic bases, scope rings, or rail attachments, eliminating unwanted movement during recoil. The 0.75-inch hole diameter accommodates standard fastening hardware and allows for flush mounting to firearm receivers, chassis systems, or custom builds. The serrated finish prevents slippage between the block and mounted components, a critical feature when precision sight-in or zero retention is paramount in tactical or competition environments. At just 0.32 pounds, the minimal weight footprint makes it ideal for lightweight rifle builds and suppressed weapon systems where mass matters.

Law enforcement armorer sections, military gunsmiths, and competitive precision shooters benefit most from this mounting block's robust design and straightforward installation. The compact 1.8 x 0.8 x 2.95-inch footprint fits seamlessly into space-constrained receiver geometries without interfering with charging handles, safety levers, or forward assist mechanisms. Installation requires only standard T-15 or T-20 torx fasteners driven to spec, and the component is compatible with most modern rifle platforms including AR-pattern, bolt-action, and modular chassis systems when used with appropriate threaded inserts or receiver taps.