Yhm Low Pro Gas Block.750" Screw

The Yhm Low Pro Gas Block .750" Screw from Yankee Hill Machine Co is a low-profile gas block designed to replace your existing front sight while maintaining a streamlined rifle profile. Built from hardened steel with phosphate coating, this gas block mounts directly to .750"-diameter barrels via two set screws, enabling shooters to install rifle-length handguards on carbine-length platforms without sacrificing sight functionality or adding unnecessary height to the upper receiver.

The .750" bore diameter is standard on mid-length and rifle-length gas systems, matching common AR-15 and modern direct-impingement platforms. Phosphate coating provides corrosion resistance suitable for field conditions, while the dual set-screw mounting system eliminates the need for permanent modifications to the barrel. The low-profile design keeps the top rail clear, preserving sight picture and optic mounting flexibility. Installation requires only a hex key and basic armorer's knowledge—no specialized tools or gunsmithing necessary.

This block serves operators and enthusiasts who want to run longer handguards on shorter barrel assemblies, improving ergonomics and cooling without changing the barrel itself. Patrol rifles, reconfigurable carbines, and precision builds benefit from the clean, minimal aesthetic and functional simplicity. The set-screw design allows repositioning if needed, accommodating different sight height requirements or system adjustments during development and testing.

Yankee Hill Machine Co is known for manufacturing quality direct-impingement and suppressor components; this gas block reflects the brand's focus on practical, user-serviceable design. The compact footprint and straightforward installation make it accessible to field-level maintenance without requiring specialized equipment or permanent alterations to your platform.