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Colt
Overview
The Colt M16 Replacement Barrel is a 20-inch barrel designed for 5.56 NATO caliber, featuring a rifle-length gas system and a twist rate of 1:7. This configuration allows for optimal stabilization of a variety of bullet weights, making it versatile for different ammunition types. You'll often find this barrel in builds focused on precision and reliability, particularly those that prioritize long-range performance with the 5.56 NATO cartridge.
Colt M16 Replacement Barrel Stripped 20in ranked #77 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 #392 of the 839 barrels builders have added.
Updated · from real builds on GunPartPicker
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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