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

Published on January 8, 2020
Duration: 6:54

This expert review from Ian McCollum of Forgotten Weapons delves into the Heckler & Koch P7M10, a .40 S&W variant of the P7 series. McCollum highlights the significant design changes required to accommodate the .40 S&W cartridge, including a substantially heavier slide, and critically assesses its ergonomic impact and market reception.

Quick Summary

The H&K P7M10, a .40 S&W variant of the P7 series, features a significantly enlarged and heavier slide to manage cartridge pressures. This design, nicknamed 'hydrocephalic,' resulted in a top-heavy feel and raised bore axis, impacting ergonomics, and it utilized traditional land-and-groove rifling.

Chapters

  1. 00:00Introduction to the H&K P7M10
  2. 00:41Market Context and Development
  3. 01:42Design Changes: The 'Hydrocephalic' Slide
  4. 02:18Physical Specs and Handling
  5. 03:33Markings and Shared Features
  6. 04:53Unique Rifling and Market Exit

Frequently Asked Questions

What makes the H&K P7M10 unique among the P7 series?

The H&K P7M10 is distinguished by its significantly larger and heavier slide, a modification necessary to safely handle the higher pressures of the .40 S&W cartridge compared to the 9mm P7M8 and P7M13 models.

Why was the H&K P7M10 nicknamed 'hydrocephalic'?

The P7M10 earned the 'hydrocephalic' nickname due to its dramatically thicker and taller slide, which was a design adaptation to manage the .40 S&W round's pressures, giving it an unusually bulky appearance.

What were the ergonomic drawbacks of the H&K P7M10?

The increased slide mass made the P7M10 very top-heavy and awkward to handle. It also raised the bore axis and sight offset by about a third of an inch, potentially increasing muzzle flip and affecting pointability.

What rifling does the H&K P7M10 use?

Unlike some other Heckler & Koch P7 series pistols that feature polygonal rifling, the P7M10 specifically utilizes traditional land-and-groove rifling.

Related News

All News →

More Reviews Videos You Might Like

More from Forgotten Weapons

View all →