Yankee Hill Machine Gas Block Hinged Low Profile Clamp-On AR-15, LR-308 Standard Barrel .750" Inside Diameter Steel Matte

A low-profile gas block is one of those upgrades that pays dividends in real-world shooting—less sight obstruction, cleaner ergonomics, and a platform that doesn't get in the way of your optics or accessories. The Yankee Hill Machine Hinged Low Profile Clamp-On Gas Block for AR-15/LR-308 is purpose-built for shooters who want a no-fuss gas system without the complexity of pinning. The .750" ID design fits standard rifle-diameter barrels, and the hinged clamp mechanism lets you install it quickly without special tools or permanent alterations to your barrel.

Yankee Hill Machine has built a reputation on solid, functional parts that work the first time and keep working through hundreds of rounds. This gas block is machined steel with a matte finish—simple, tough, and immune to the cosmetic wear that comes with actual use. Whether you're building an AR for hunting, precision shooting, or a modern sporting rifle platform, a quality gas block is foundational to reliable operation, and the low-profile design keeps your sight line uncluttered so you can mount optics where they belong.

The clamp-on design means no gunsmithing, no permanent modifications, and easy swaps if you're the type to experiment with your setup. That flexibility, combined with Yankee Hill's track record for durability, makes this a smart component choice for anyone building or upgrading an AR platform in 5.56, .308, or related calibers.

Key Features

• Low-profile design minimizes obstruction of sight picture and optic mounting
• Hinged clamp-on installation—no pinning or drilling required
• .750" inner diameter fits standard rifle-profile barrels
• Steel construction with matte finish for durability and corrosion resistance
• Compatible with AR-15 and LR-308 platforms

Specifications

Frequently Asked Questions

Will this gas block fit my AR-15 or LR-308?

Yes—this block is designed for both platforms, provided your barrel has a .750" diameter at the gas block location. Most modern AR-15 and .308 rifles use this standard diameter.

Do I need a gunsmith to install it?

No. The hinged clamp-on design allows you to install it by hand or with basic tools. There's no pinning, drilling, or permanent modification to your barrel.

Why choose a low-profile gas block?

Low-profile gas blocks sit lower on the barrel, keeping your sight picture unobstructed and giving you more real estate to mount optics, rail systems, or other accessories without crowding.

What finish is this available in?

This gas block comes with a matte steel finish, which provides excellent durability and corrosion resistance for field use.