Davidson Defense Exercitus 14.5-inch Mid-Gas 1:7 5.56 NATO AR-15 M-Lok Handguard Pistol Upper Build Kit

Exercitus 14.5-Inch Mid-Gas 1:7 5.56 NATO AR-15 M-LOK Handguard Pistol Upper Build Kit

The Exercitus Upper Build Kit is built around a 14.5-inch 5.56 NATO medium profile barrel with a mid-length gas system and a 12-inch MX10 free-float M-LOK handguard. BCG and charging handle are not included.

Key Features

• 14.5-inch barrel, medium profile, 4150 CMV steel, 1:7 twist, Nitride finish
• Mid-length gas system
• 7075-T6 aluminum upper receiver with M4 feed ramps, anodized finish
• 12-inch MX10 M-LOK handguard
• Omega Manufacturing Super Compensator (MZ-1009B), rated for .223/5.56, black, on 1/2x28 threads with 1/2-inch black crush washer
• BCG and charging handle are not included.

Barrel and Gas System

The 14.5-inch barrel is built in a medium profile from 4150 chrome moly vanadium steel and finished in Nitride, with a 1:7 twist rate suited to 5.56 NATO and .223 Remington. It runs a mid-length gas system through a stainless steel gas tube and a micro low-profile steel gas block with a .750-inch diameter, matched to the barrel's .750-inch gas journal. At the muzzle, 1/2x28 threads carry the included Omega Manufacturing Super Compensator, model MZ-1009B, rated for .223/5.56 and finished in black, secured with the supplied 1/2-inch black crush washer.

Upper Receiver and Handguard

The upper receiver is machined from 7075-T6 aluminum with M4 feed ramps and an anodized finish, and it includes the forward assist assembly along with the ejection port door, rod, and spring. It's paired with a 12-inch MX10 M-LOK handguard.

Follow all manufacturer instructions and safe handling practices.

Ensure compliance with all applicable federal, state, and local laws.