Vltor Set Screw .750 Bore Slv

The VLTOR Set Screw .750 Bore Slv is a low-profile gas block engineered for AR-platform rifles configured with rail systems and handguards mounted directly over the barrel's gas tube. Built to tight tolerances, this set-screw design allows the gas block to nestle inside modern rail systems where standard clamp-on blocks create incompatibilities. Its compact footprint makes it an essential component for builders prioritizing streamlined aesthetics and integrated handguard systems without sacrificing gas-system reliability.

Machined from 17-4 PH stainless steel, the gas block delivers corrosion resistance and dimensional stability across extended shooting sessions and varied climates. The .750-inch bore diameter accommodates standard mid-length and rifle-length gas tubes, making it compatible with most mil-spec AR builds. An anti-reflection, anti-glare finish reduces light signature and eliminates distracting reflections downrange—a practical consideration during low-light operations or when mounted on precision-build rifles. The set-screw retention method provides positive locking without the bulk of external clamps, critical when bore diameter and rail clearance constraints demand minimalist design.

This component is purpose-built for builders and operators running enclosed rail systems—whether precision rifles, patrol carbines, or specialized duty builds where conventional gas blocks interfere with handguard geometry. It's equally valuable for shooters upgrading existing rifles to free-float rail platforms and discovering gas-block fitment issues. Serious AR builders and gunsmiths who understand gas-system tuning recognize that proper gas-block positioning and retention directly impact cycling reliability and recoil management. The VLTOR set-screw gas block solves a specific but common integration challenge without requiring modifications to barrel or rail.