Details
Davidson Defense 'Left Handed Mod 1' 16.5-Inch AR-15 5.56 NATO Nitride Left-Handed Rifle Upper Build Kit
The Left Handed Mod 1 Upper Build Kit is built around a Mercury Precision "Satellite" 16.5-inch 5.56 NATO barrel in a government profile, with a mid-length gas system, a 1:7 twist, and a Nitride finish. It is paired with a left-handed Davidson Defense Black Diamond Series billet upper receiver in a no forward assist configuration and an ELD Performance 15-inch free-float quad rail handguard. A Recoil Technologies A2 GI birdcage flash hider finishes the muzzle. The left-handed receiver is built for left-side-ejecting configurations, and the no forward assist design leaves the side of the receiver clean and uncluttered. The 1:7 twist suits a wide range of bullet weights in 5.56 NATO. BCG and charging handle are not included.
Key Features
- Mercury Precision "Satellite" 16.5-inch government profile barrel, Nitride finish, 1:7 twist, 5.56 NATO, 1/2x28 muzzle threads
- Mid-length gas system with a mid-length stainless steel gas tube and a micro low-profile steel gas block sized for a .750-inch barrel
- Left-handed Davidson Defense Black Diamond Series billet upper receiver, no forward assist
- ELD Performance 15-inch free-float quad rail handguard
- Recoil Technologies A2 GI birdcage flash hider, rated for 5.56/.223, on 1/2x28 threads
- BCG and charging handle are not included.
Barrel and Gas System
The 16.5-inch "Satellite" barrel from Mercury Precision is built in a government profile and chambered in 5.56 NATO, with a 1:7 twist rate suited to a wide range of bullet weights. It is finished in Nitride, a surface treatment that adds hardness and corrosion resistance while leaving a clean, matte black look. The barrel runs a mid-length gas system through a stainless steel gas tube and a micro low-profile steel gas block sized for a .750-inch barrel, and the low-profile block helps it sit cleanly beneath a free-float handguard. At the muzzle, 1/2x28 threads carry the included Recoil Technologies A2 GI birdcage flash hider.
Upper Receiver and Handguard
The upper receiver is a left-handed Davidson Defense Black Diamond Series billet unit, built without a forward assist. It is paired with an ELD Performance 15-inch free-float quad rail handguard. As a free-float design, it leaves the barrel free of handguard contact, while the quad rail layout gives the builder Picatinny mounting surfaces on multiple sides for optics, lights, grips, and other accessories.
Compatibility
This kit is built for AR-15 lower receivers chambered in 5.56 NATO. A left-handed bolt carrier group is required to match the left-handed upper, and it is not included. Barrel material, upper receiver material and finish, handguard material and finish, crush washer inclusion, and ejection port door 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.
Follow all manufacturer instructions and safe handling practices.
Ensure compliance with all applicable federal, state, and local laws.
