FN 509 Review: Better Than A M&P Or Glock?

Published on March 21, 2018
Duration: 18:53

This guide details the field stripping process for the FN 509, a pistol derived from FN's submission for the U.S. Army's Modular Handgun System contract. It covers unloading, slide removal, barrel and recoil spring assembly removal, inspection of key components like the cold hammer-forged barrel and nitro-carburized slide, and reassembly. The process is straightforward and essential for routine maintenance and inspection, as demonstrated by Mrgunsngear's expert review.

Quick Summary

The FN 509, developed from FN's U.S. Army MHS contract submission, features a 4.0" cold hammer-forged barrel, 17+1 capacity, and a 5.5-7.5 lb trigger. It demonstrated high reliability over 900 rounds, with issues only noted on specific polymer-cased ammo.

Chapters

  1. 00:29Introduction & History
  2. 02:03Grip & Magazines
  3. 03:32Controls & Ergonomics
  4. 05:02Trigger Analysis
  5. 06:23Slide & Sights
  6. 08:08Disassembly & Internals
  7. 09:42Market Comparisons
  8. 11:39Reliability & Pricing

Frequently Asked Questions

What is the FN 509's origin and design philosophy?

The FN 509 originated from FN Herstal's submission for the U.S. Army's Modular Handgun System (MHS) contract. It builds upon the FNS series, incorporating military-grade improvements for the civilian market, aiming for reliability and adaptability.

How does the FN 509 perform in terms of reliability and trigger quality?

During a 900-round test, the FN 509 showed excellent reliability, with issues only occurring with specific polymer-cased ammunition. Its trigger features a 5.5-7.5 lb pull with a distinct wall, crisp break, and tactile reset.

What are the key ergonomic and control features of the FN 509?

The FN 509 offers aggressive grip texturing, interchangeable backstraps, and fully ambidextrous magazine and slide releases. However, the magazine release can sometimes be hindered by the shooter's grip.

What are the FN 509's technical specifications and pricing?

The FN 509 has a 4.0" barrel, 17+1 capacity in 9x19mm, and a 1:10" RH twist rate. Its MSRP is around $481 (dealer/club price), making it a competitive option.

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