- HK USP 45
- HK USP 45 Tactical
- HK USP 45 Expert
- HK USP 45 Elite
- Mark 23
- Does not fit the HK45 or HK45 Tactical (although we do offer a +3 for the HK45 model)
- Will not fit or work with the 10 round USP45 magazines
5 Reviews Hide Reviews Show Reviews
Installs easy looks great, I need to order more.
This 5rd extension is so fantastic that I'm tempted to change all my 12 rounders into 17 rounders. It's a little pricey but absolutely worth it.
I wanted to extend my mk24 mags and these work perfectly. Easy to install and built like a tank. 12rd mags now accommodate 5 more, perfect upgrade.
It came with a longer spring. I had some issues with it initially, including the magazine becoming unseated when firing. I had the HK45C extended mag release installed on my USP 45, so I swapped the mag release back to smaller one that is correct for the pistol. That solved all the issues and the extended magazine/ pistol has been flawless since.
Solid extensions, lockup nice and tight on my Mk23, haven't had any feeding issues thus so far, will update once i get more rounds down the pipe