GG&G HK USP COMP Slim LINE M3/M6 MNT

Great low profile rail for the USP! Fits perfect and rock solid. Gives a tacticool look, but still functional if your using a light. Unfortunately it didn't work for what I wanted, which is to attach a Magnetospeed chronograph. Even with the rail's super low profile, the Magnetospeed is still too low and the sensor won't detect the bullet. It sits flimsy on the pistol too. Even with my full size USP, I still don't have enough room attach Magnetospeed's rail adapter fuly. It hits the trigger guard, so I have to attach it one slot further, but that does not give the adapter enough space to "grip" the rail which will make it canted and you'll get "cross shot errors". It's back to the old chronograph stands for the USP.

Used this to mount both a Streamlight TLR-7A and TLR-1HL. Shot thousands of rounds with this adapter on without issue.

Easy to install, fits perfectly and is well made. Thank you!

Perfect. What else is there to say. Slots perfectly into HK’s “proprietary” rail system to give you a more standard nothing rail.Milled perfectly and just feels beefy.Maybe through a smidge of loctite if you want but so far no issues with the screws loosening.

Ended up returning it. Maybe the issue was my flashlight

Installed on my HK USP Compact 9mm. Fits perfectly and does not move (wiggle) at all. Easy install with one 3/32" allen wrench.The fore end of the rail does stick out a little beyond the muzzle, but that is to be expected with a USP compact (see picture). Installed a Surefire XC1 and it sits exactly where I would expect and like it for the size of my hands.

It mounted perfectly to the gun and is a nice tight fit with no issues at all.

Doesn’t add much under the rail and is easily installed. It is very sturdy and makes attaching thing much more versatile