Description
The Aero Precision 12.5″ CHF 5.56 Midlength Barrel is a rugged, duty-ready option for builders who want maximum barrel life and consistent performance in a compact AR-15 setup. Each PRO series barrel is cold hammer forged from 4150 CMV and finished in Melonite (nitride) for excellent corrosion resistance and long-term durability. The mid-length gas system helps smooth out cycling compared to shorter gas setups, and the 1:7 twist supports a wide range of common 5.56 bullet weights.
Aero also adds a single-point gas block dimple, providing a solid bedding surface for set screws and making gas block alignment easier during installation—an especially useful detail on hard-use builds.
Features
Cold hammer forged construction for long service life
4150 CMV steel with nitride/melonite finish for corrosion resistance
Mid-length gas system for smooth cycling in a compact barrel length
1:7 twist for broad bullet-weight stability
Single-point gas block dimple aids set-screw bedding and indexing
.750 gas block journal and 1/2×28 threads for common components
Specifications
Finish: Nitride / Melonite
Cartridge Compatibility: 5.56 NATO
Barrel Length: 12.5″
Gas System Length: Midlength
Gas Block Journal: 0.750″
Twist Rate: 1:7
Muzzle Thread Pattern: 1/2×28
Platform: AR-15
SKU: 32472
