One Horse M4 5.56 AR-15 Barrel - Carbine - M4 - 16"

A reliable, mil-spec-ready 16-inch barrel for your next AR-15 build. The One Horse M4 Contour Barrel in 5.56 NATO delivers a 1:7 twist rate for versatility across bullet weights and a carbine-length gas system for straightforward AR-15 compatibility.

Features:

• 16" barrel, M4 profile
• Chambered in 5.56 NATO, 1:7 twist
• 4150 steel construction
• Black nitride finish
• Carbine-length gas system
• Threaded 1/2x28
• Made in the USA

The 1:7 twist rate stabilizes the full spectrum of commonly available 5.56 bullet weights, from lightweight 55-grain FMJs to heavier 77-grain match projectiles. The black nitride finish provides superior wear and corrosion resistance compared to phosphate or bare steel finishes, reducing long-term maintenance requirements.

By One Horse. Made in the USA. Standard manufacturer warranty applies.