One of the major improvements of the HK45 over the USP line of pistols is the magazine release. The HK45 has an EXCELLENT magazine release that runs almost half the length of the trigger guard and allows a shooter to keep their hand in the firing position on the gun while dropping mags with practice. The USP 45 mag release is a tiny nib and very easy to miss in the heat of combat on the city streets of America.
There is a solution, and it is provided by HK.
The HK45 Compact magazine release is significant;y larger than the USP mag release and is a drop in part. The full size HK45 mag release will not work as part of it is molded into the grip frame. If one was enterprising enough you could possibly make it work...but it would be a lot of work.
I took some pics and measurements for you all.
The standard USP45 mag release measures 0.293 inches in length on the release pad surface.
The HK45C measures 0.460 inches in length on the release pad surface.
Swapping them out takes all of 2 minutes. Push the release pin out, remove the release, transfer the return spring to the new release, reinsert and push the pin back in.
Don't order your part from HKParts.net, try calling HK themselves down in Columbus. HKParts.net wanted $24 plus shipping for ONE mag release; HK in Columbus shipped me TWO of them for $16, including tax.
I hope this is helpful to anyone with HK USPs.

There is a solution, and it is provided by HK.
The HK45 Compact magazine release is significant;y larger than the USP mag release and is a drop in part. The full size HK45 mag release will not work as part of it is molded into the grip frame. If one was enterprising enough you could possibly make it work...but it would be a lot of work.
I took some pics and measurements for you all.
The standard USP45 mag release measures 0.293 inches in length on the release pad surface.
The HK45C measures 0.460 inches in length on the release pad surface.
Swapping them out takes all of 2 minutes. Push the release pin out, remove the release, transfer the return spring to the new release, reinsert and push the pin back in.
Don't order your part from HKParts.net, try calling HK themselves down in Columbus. HKParts.net wanted $24 plus shipping for ONE mag release; HK in Columbus shipped me TWO of them for $16, including tax.
I hope this is helpful to anyone with HK USPs.




