Well here is my mileage and suggestion:
First: I installed a HK45c mag release on my USP45 and it changed my life. It was working just fine before, but now, it is so fast and easy. I love it, I wish they did that on all of their pistols and I would do it to every USP that has a metal mag.
Second: HK mag releases are used much more efficiently if you use your middle or trigger finger. I use my middle finger and it is very fast. Once you get used to it, much faster than any side button release.
Here are a few for example.
Fast P30 reload.
FASTEST RELOAD EVER HK P30 9mm BOOM BABY. - YouTube
Maverick's thoughts on it, pretty important:
HK Pistol Style Mag Release Information - YouTube
First: I installed a HK45c mag release on my USP45 and it changed my life. It was working just fine before, but now, it is so fast and easy. I love it, I wish they did that on all of their pistols and I would do it to every USP that has a metal mag.
Second: HK mag releases are used much more efficiently if you use your middle or trigger finger. I use my middle finger and it is very fast. Once you get used to it, much faster than any side button release.
Here are a few for example.
Fast P30 reload.
FASTEST RELOAD EVER HK P30 9mm BOOM BABY. - YouTube
Maverick's thoughts on it, pretty important:
HK Pistol Style Mag Release Information - YouTube