P7M7: The Mythical Lost .45 ACP H&K
/ forgottenweapons Cool Forgotten Weapons merch! http://shop.forgottenweapons.com The P7 was one of the most interesting and original handgun designs of the last few decades. Originally created for West German police trials, it was chambered in 9x19mm. As it became popular beyond Germany, the question arose of it being offered in additional calibers. The P7M10 was released in .40 S&W (that's a story for a different video), but it was never put into serial production in .45 ACP, despite H&K USA pushing heavily for it. On the technical side, the .45 ACP cartridge caused problems with the design's gas-delay system. It simply did not work reliably with the bullet weight and gas pressure of the .45 cartridge. Instead, H&K engineers replaced the gas piston with a hydraulic buffer or damper. However, only a total of 6 prototype were made in the mid 1980s, as the German branch of the company was against its production (presumably because they did not think it would sell well enough to justify the production retooling costs it would require). I believe this example (serial number 2) is the only one in the United States today.

H&K Mk23 SOCOM .45 Development

H&K SL-6 and SL-7 Rifles

H&K's Hydrocephalic P7M10 in .40 S&W

US Armament Reproduction DeLisle Commando Carbine (Silenced .45ACP)

TAC-TV Episode 19 - H&K History

H&K P7 Family: Pistols for Gun Cognoscenti

Heckler & Koch's Modular Machine Gun: the HK21E

A Guy Used a Machine Gun in a Self-Defense Shooting

H&K's Middle Child: The HK33 and HK53 in 5.56mm

HK P7 PSP: The Most Unique Handgun

H&K P8A1: The Bundeswehr's USP

The HK P7-Family of Pistols

Nothing about the honey badger is normal... and here is why

H&K UMP: An H&K SMG Made for .40 and .45

Floridaman Makes an HK P7 Knockoff

H&K G36: Germany Adopts the 5.56mm Cartridge

The H&K P7 M13 is Coming Back? The P7 Pro at SHOT Show 2025!

What Happened to the Cox .049? | The Engine That Couldn’t Survive Modern Childhood

The H&K P7 (And Why I Carry One)

