Below you will find pages that utilize the taxonomy term “MHS”
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SIG M17 vs M18: Key Differences & Which to Buy (2026)
SIG M17 vs M18: The Three-Second Answer to the Military’s Two-Brother Pistols
Short answer: The M17 is the full-size version (4.7" barrel, 8.0" overall length, 29.6 oz empty), while the M18 is the compact version (3.9" barrel, 7.2" overall length, 28.1 oz empty). Both pistols share the same Fire Control Unit (FCU), and 17-round standard magazines are fully interchangeable, as are the 21-round extended magazines. The U.S. Army fields the M17 as its primary sidearm; the Marine Corps chose the M18. In the airsoft world, VFC offers licensed 1:1 GBB replicas of both.
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FN 509 Complete Guide: Military-Grade Pistol & Training Guide
FN 509 Introduction
The FN 509 is a polymer-frame striker-fired pistol manufactured by FN America, the U.S. subsidiary of legendary Belgian firearms manufacturer FN Herstal. Released in 2017, this pistol originated from FN’s submission to the U.S. Army’s XM17 Modular Handgun System (MHS) competition. Although it lost to the SIG P320, the FN 509 underwent rigorous testing with over one million rounds of ammunition, proving itself as a reliable, accurate, and feature-rich tactical pistol.