Yankee Hill Machine Gas Block with Folding Front Sight Review

YHM gas block with folding front sight

YHM gas block with folding front sight

The Yankee Hill Machine gas block with folding front sight combines the funtionality of a gas block with a back-up front sight. The front sight is operated by a spring loaded push button and the sight locks in the up position ensuring it maintains zero. The gas block front sight folds down out of the way when not in use, enabling unobstructed use of your optics. The front sight post is protected by ears. You can easily mount the YHM gas block to standard diameter rails as a split clamping design means you don’t have to remove flash hiders or compensators. The clamping halves of the gas block sight are tensioned by hex cap screws to completely fix the sight once tightened up. The steel is phosphated to resist abrasion, scratching and corrosion. The Yankee Hill folding front sight gas block is 1-7⁄8″ (4.8cm) long and 1-3⁄16″ (3cm) wide. Sight Post – 2¼” (5.7cm) high when raised. Three models are available.

YHM-9394 includes bayonet lug and pivoting sling swivel that accepts tactical slings up to 1¼” wide. Rubber coating prevents swivel from rattling and giving away your position while on patrol. Weight 6 oz. (170g).

YHM-9395 has sling swivel, no bayonet lug. Weight  5.5 oz. (156g).

YHM-9835A has Picatinny-style under-rail that accepts lights, lasers, and other forward-mounted accessories. No sling swivel. Weight 7.7 oz. (219 g).

Check the price of the YHM gas block with folding front sight at Brownells, a name you can trust.

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