Yankee Hill Machine Co Scope Riser Mount, 1/2" Rise, 5 1/4" Long, Black, Picatinny YHM-227A

Was a little hesitant about this product given some other reviews saying how sometimes it would be missing the installation screws or would wobble around, but I’ve had none of these issues. Went on nicely, tightened perfectly. Threw it onto my rifle and brings my scope to around 2.04”ish night. I’ve been thinking about getting a Geissele 2.04” Mount but have been cautious because I thought it might be too high. This product offered a perfect solution to try a higher mount on a budget. Fantastic product and very happy. Looks cool too. Can’t beat for only $30.

I have been building AR's for several years and recently wanted to see what all the hype was about with optics being mounted at higher centerlines on the rail(1.93, 2.04, 2.26). Rather than spend a couple hundred dollars on mounts, I thought I would buy a $30 riser and test out a higher mounted optic. With a 1.55 1/3 co witness mount and this riser, the optic sits at 2.05 and initially, I really like this height and will know better after using.The mount is very stable and the quality is excellent. I have had experience with other YHM products over the years and the quality you receive for the price is outstanding. This mount may seem like a small, unimportant part, but if you are going to mount your optic to it, it must be solid. Time will tell if I have issues holding zero with this set up, but it was worth the purchase to test some options.

I've had it for over 6 months. Works great for raising on Eotech on an AR to a more comfortable height and does everything my Unity Tactical Fast Riser does. Good buy if you're on a budget. Just use blue loctite, torque firmly and add witness marks.

I bought this after watching a few videos on passive aiming through night vision and thought I wanted to try a high rise mount for my holosun 403b. I stumbled upon milspec mojo's channel and in one of his vids he talked about how he used this as a budget option until he got a dedicated mount for his aimpoint. I saw the priced and decided for the money it was worth purchasing just to try out a higher optic.This is well built and I saw no obvious flaws or defects when unboxing. Mounting it was smooth and easy and caused no issues. Mounting my holosun to it was just like mounting to any other rail and once I receive my magnifier I expect to have no issues there either.Once everything was mounted and I did a little dry fire practice and I immediately realized the benefits of having a higher mounted optic. It's so much more comfortable to aim while standing and resting. I dont have to crane my neck down at all keeping it completely straight. It did take a little to get used to but now I don't see myself going back to lower 1/3. I will say on my next optic I'll probably pony up the extra cost for a dedicated mount from scalar works or unity because this mount is a little heavy. Other than that I have no negatives. If you want to try out a high rise optic without spending a couple hundred bucks on mounts then this is a good place to start.

Put on my FS2K. Fit is absolutely perfect. Tight. Doesn’t budge. Solid and heavy duty. Holds zero without flaws

Nice Picatinny 1/2" riser, fits perfect. This will not work well on a Weaver style rail. I could not find a torque spec. So I just torque them to 35 inch pounds to keep it good and tight. The rail was snug at 15 inch pound but didnt seem adequate.YMMV

The cross bolts coating on the threads or the female threads seems to bind in the aluminum. I even used some grease and getting any sort of clamping is very difficult. Note that this is a solid billet unit so for any clamping to happen the base has to bend and distort. Unlike most mounts that clamp the picatinny with a steel plate. My allen screws are rounded out and the screws are stuck. I will be welding nuts on the screw heads to remove.

Got my optic and magnifier up to the exact height I wanted. Mounts rock solid. Haven't seen any shift in zero. Due to the 1 piece mount your mileage may vary if you have a cheap out of spec rail, if you have something quality and in spec you're good to go.