Details
Protectorate 16-Inch Carbine-Gas 1:10 7.62x39 AR-15 Free-Float M-LOK Handguard Rifle Upper Build Kit
The Protectorate Upper Build Kit is built around a 16-inch "Sagger" 7.62x39mm barrel machined from 4150 chrome moly vanadium steel in an H-Bar heavy profile, with a carbine-length gas system and a Phosphate finish. It is paired with a 7075-T6 aluminum upper receiver with M4 feed ramps and a 15-inch black M-LOK handguard with a partial Picatinny rail, integrated handstop, anti-rotation tabs, and trapezoid cuts. The heavy profile adds a sturdy feel up front, and the 1:10 twist suits the bullet weights typical of 7.62x39. BCG and charging handle are not included.
Key Features
- 16-inch "Sagger" H-Bar barrel, 4150 chrome moly vanadium steel, Phosphate finish, 1:10 twist, 7.62x39mm, 5/8x24 muzzle threads
- Carbine-length gas system with a micro low-profile gas block sized for a .750-inch gas journal
- 7075-T6 aluminum upper receiver with M4 feed ramps, anodized finish
- 15-inch black M-LOK handguard with partial Picatinny rail, integrated handstop, anti-rotation tabs, and trapezoid cuts
- AR-15 GI birdcage flash hider on 5/8x24 threads
- BCG and charging handle are not included.
Barrel and Gas System
The 16-inch "Sagger" barrel is machined from 4150 chrome moly vanadium steel in an H-Bar heavy profile and chambered in 7.62x39mm, with a 1:10 twist rate. It is finished in Phosphate, a matte, corrosion-resistant treatment that gives it a clean, uniform look. The barrel runs a carbine-length gas system through a micro low-profile gas block sized for the .750-inch gas journal, and the low-profile block helps it sit cleanly beneath the handguard. At the muzzle, 5/8x24 threads carry the included AR-15 GI birdcage flash hider.
Upper Receiver and Handguard
The upper receiver is machined from 7075-T6 aluminum with M4 feed ramps and an anodized finish, giving it a hard, wear-resistant surface that holds up to regular handling. It is paired with a 15-inch black M-LOK handguard. The partial Picatinny rail provides a short stretch of rail for optics or backup sights, the integrated handstop gives the support hand a positive stopping point, anti-rotation tabs help hold the handguard in position, and the trapezoid cuts and M-LOK slots add room for lights, grips, and other accessories while keeping weight down.
Compatibility
This kit is built for AR-15 lower receivers chambered in 7.62x39mm. Handguard material, gas tube details, and ejection port door and forward assist configuration were not supplied with this listing and should be confirmed before purchase. Because the BCG and charging handle are not included, they must be sourced separately to complete the upper, and the bolt carrier group must be rated for 7.62x39.
Follow all manufacturer instructions and safe handling practices.
Ensure compliance with all applicable federal, state, and local laws.
