Yankee Hill Machine Low Profile Gas Block - .750 - Set Screw Style

A little loose on the barrel. Roll pin hole was a little oversized.

A little tight fit on my recently purchased Spikes TacticalST- FN Cold Hammer Forged 14.5 Mid-Length Barrel (5.56). Just had to use a little lube. Does as advertises.

A perfect fit! I would deff buy this again!

Always competitive and fast shipping!

Another great product i have used in the past! PrimaryArms came through again with quick service and exactly what i needed!

Another great product of YHM. I have used these on two builds and not a problem with installation or function. Thank you Primary Arms for having the best stuff for great prices.

Awesome customer service, fast shipping, great quality gas block. Really low profile, goes right together fits like a glove.

awesome experience as always from primary

Barrel measured .751. Gas block was to tight to fit on even with hitting it with a block of wood. I had to ground the inside diameter out to get it to fit. In all fairness I had the same problem with a different brand of gas block (Troy) bought at Brownels. Brownel gun tech suggested using an abrasive cloth to reduce the diameter of the BARREL which was a match White OAK barrel. Dumb idea imho. Rather butcher $25 gas block. Finally got it to fit but scratched it up and a crumby job.