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Faxon Firearms
Overview
The Faxon Firearms 16" Government/SOCOM barrel is designed for 5.56 NATO caliber rifles, featuring a mid-length gas system that optimizes reliability and recoil management. With a twist rate of 1:8, this barrel effectively stabilizes a variety of bullet weights, making it versatile for different shooting applications. Commonly found in builds that prioritize a mid-length gas system and 5.56 NATO caliber, this barrel is a solid choice for those looking to enhance their AR-15 performance.
FAXON Firearms 16" Gov't/socom 5.56 NATO Mid-Length 4150 QPQ
Prices checked
FAXON Firearms 16" Gov't/socom 5.56 NATO Mid-Length 4150 QPQ ranked #16 of the 250 barrels builders added on GunPartPicker in September 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it ranks #19 of the 830 barrels builders have added. Builds with this barrel are nearly all chambered in 5.56 NATO, nearly all on mid-length gas, and nearly all AR-15.
Availability is good: it was in stock at one retailer or another nearly every day in September 2026, and today 7 of the 8 retailers we track have it in stock. Prices barely moved in September 2026, holding around $160.49, so there haven't been real sales lately. Buying today, the lowest price is $160.49 at Ammunition Depot, which matches the best price we saw in September.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
We ranked every barrel by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Barrel Length & Brand Report →Check it against the live catalog:
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