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.

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

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

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

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.

This adapter is much better than the old GG&G adapter, but not as good as the old Surefire adapter. The Surefire is discontinued, so this is probably your best option. My problem is that I use the older Surefire X300-U A light. This light doesn't have the screw type fastener and the light fits very tightly to the adapter. The only way I could get the light to properly fit on the adapter was to remove one of the rails on the light. Each rail is attached with three hex screws; and when you reattach the screws, you must use Loctite to secure the mount. If you want to remove the light from the pistol, you need to remove either one of the light mounting rails or remove the adapter from the pistol because the light fits very tightly. Trying to slide the light onto the front of the rail, as you would on a Glock rail, may be possible, but I found it's not worth the effort. The front edge of the adapter is blunt and makes it difficult to slide the light onto the adapter. If you're using the Streamlight TLR1 or the Surefire X300-U B, or something similar, you will have an easier time because these lights use the screw attachment.

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

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.

Parfait cet adaptateur ... s'adapte et permet de passer du rail spécifique HK à un rail Picatinny au standard 1913. idéal pour équiper un "pistolet air soft" d'une lampe "tactique". je recommande