Reviews & Ratings for Yankee Hill Machine Low Profile Gas Block With Pinch Screw Mounting YHM-9384 — 29 reviews — Page 1

Good solid gas block. Highly recommended. Thank you

Bought them for all my AR’s. Don’t have to worry about dimples or set screws easy to readjust, great gas block.

And it probabaly won't fit most handguards on the market. Unless it's a quad rail type or fat tubular carbon fiber handguard. Like another customer said the bottom half is too big. Gonna sell this and buy a VLTOR or Daniel Defense low profile clamp-on gas block.

Unless one wants to pin or indent the bottom of a barrel, this is the way to go. I have this product on 2 guns.
A little instalation tip I learned. Get a piece of spaghetti and stick it in the gas hole on the barrel. Break it off so it doesn't stick out above the top of the gas hole. Slide the gas block over the barrel until it can't go any further. Tighten the screws on the gas block, but make sure it can turn back and forth. Flip the barrel over. Turn the gas block or barrel back and forth until the piece of spaghetti falls into the gas hole on the block. Leaving the barrel upside down,turn the gas block gently back and forth slowly until it stops both ways. Center it in the middle and tighten the screws. This Is important so the spaghetti will fall out and the gas block is centered over the hole. After tightening block turn barrel over and use a cleaning rod to break the spaghetti off. Both pieces will fall out. There ore several different sizes of spaghetti.

Works well. Mounts easy with no problems. I am not sure it will fit under some handguns but it works well for me. I am replacing a typr F sight/gas block so it is exposed. It is not intrusive looking, but isn't cool looking neither, if that matters to anyone.

I personally like the clamp on style of gas block better. I feel it has a better lock up on the barrel, and particularly a better seal on the barrel (which is important in a gas operated system). There are other clamp on style gas blocks out there that are easily twice the price of Yankee Hill's, but this one is wholely adequate. I've used these on several builds and have never had an issue. My rifles perform very well utilizing this gas block. Another thing thats nice about using a clamp on versus a set screw style block, is if you have issues with the barrel (like a dimple that is offset) it wont affect your ability to properly index the block. Overall, this block is a win-win. A rock solid product and a great price.

This gas block was easy to install and machines to tight tolerances. Once installed it doesn’t move. The finish matched my S&W Sport II and the gas block allows you to install rifle length free float handguards on a carbine. Highly recommend.

This is not a low profile gas block. it will not clear your free float hand rail, the bottom of the block is too big and uses way to big of screws to secure it. I tried to use it with my UTG super slim hand rail and ended up having to alter it just to get it to not push my hand rail down away from the barrel. Upon further investigation I had to remove it completetly and buy a different brand.

The fit and finish of this gas block is excellent. Unfortunately it seems it is not compatible with the slimmer profile hand guards/rails. In my case that's the Geissele SMR MK13. Looks like it fits. Especially when compared to the Geissele Super Gas Black that came with the rail, but as someone else put it; she's a fat bottom girl.

YH makes great products. This will do the job it is designed for. OP has excellent customer service and support. Good price and fast shipping. You will need this if you plan on installing a free float.....