Roller-Delay Showdown: Angstadt MDP-9 vs H&K SP-5
This video features Ian McCollum, a recognized firearms historian, conducting a performance comparison between the Angstadt Arms MDP-9 and the Heckler & Koch SP-5. Both are 9mm roller-delayed blowback firearms tested in a timed course of fire. The MDP-9 demonstrated slightly faster times but experienced reliability issues, while the SP-5 was more consistent. The video also covers suppressed shooting and ergonomic differences.











