HK Tries to Improve the MP5 - MP5 PIP (1980s-90s) ( lemmy.world )
The MP5 PIP has some interesting features, including a weaver-style top rail, a “chute” type magazine well, a centrally located button that appears to be a bolt catch/release, and a round magazine catch. Also, the MP5 PIP appears to be the origin for the distinctive “flipper” charging handle of eventually used in the G36.
Ultimately the PIP would stay a prototype but some features from the design would go on to be in other later HK designs like the UMP.
https://lemmy.world/pictrs/image/8d208dd0-6b90-4ccf-b82f-52f227d4f1bb.jpeg
Not Ian's video but this guy is the guy on Heckler and Koch stuff: [14:13]
https://youtu.be/tLi05QgleTw?si=
![](https://mbin.grits.dev/media/cache/resolve/entry_thumb/3a/22/3a225d96e81597a22b70e1691fa16ffc39625a62969ab9cd9bf845876e6ca2ce.jpg)