Description
.750″ AR-15 Gas Block Pinning Jig – Low-Profile Gas Block Alignment & Drilling Tool
Accurate Gas Block Alignment & Pinning
This AR-15 gas block pinning jig is designed to help align compatible .750″ low-profile gas blocks with the barrel and provide a guided setup for drilling and tapered-pin installation.
Key Features
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Designed for .750″ Gas Blocks – Compatible with many .750″ low-profile gas blocks and .750″ diameter barrels.
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Alignment Jig – Helps maintain proper gas block alignment with the barrel during machining.
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Drill-Through Design – Allows the gas block and barrel to be drilled as an assembly for tapered-pin installation.
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Secure Gas Block Installation – Provides a repeatable method for mechanically securing a compatible gas block to the barrel.
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Additional Upper-Hole Feature – Includes an upper-hole feature that can be used when modifying a compatible gas block for adjustable-gas applications.
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Reusable Shop Tool – Designed as a practical addition to gunsmithing, machining, and firearm-maintenance setups.
Compatibility
Designed for use with .750″ diameter barrels and compatible .750″ low-profile gas blocks.
Gas block dimensions, hole locations, and configurations can vary between manufacturers. Always verify the dimensions and compatibility of your specific gas block and barrel before use.
Important Information
This listing is for the machining/alignment jig only. Gas block, barrel, drill bits, pins, and other installation components are not included.
Proper tooling, measurements, and machining practices are required for installation. Users are responsible for verifying compatibility and complying with all applicable federal, state, and local laws, as well as manufacturer specifications.











