Davidson Defense Rapid Drop 7.5-inch Pistol-Gas 1:7 5.56 NATO AR-15 Freefloat M-Lok Handguard Pistol Complete Upper Build

Rapid Drop 7.5-Inch Pistol-Gas 1:7 5.56 NATO AR-15 Free-Float M-LOK Handguard Pistol Complete Upper Build

The Rapid Drop Complete Upper is built around a 7.5-inch 5.56 NATO barrel machined from 416R stainless steel in a government profile, with a pistol-length gas system and a stainless finish. It pairs a billet upper receiver with a 7-inch black free-float M-LOK handguard, and it ships with a 5.56x45mm bolt carrier group and a mil-spec charging handle, so the builder receives the core components of a working upper in one package. The short barrel keeps the front end compact and quick to handle, and the 1:7 twist rate suits a wide range of bullet weights in 5.56 NATO.

Key Features

• 7.5-inch government profile barrel, 416R stainless steel, stainless finish, 1:7 twist, 5.56 NATO
• Pistol-length gas system with a micro low-profile steel gas block sized for a .750-inch barrel
• Billet upper receiver, 6061-T6 aluminum, anodized finish
• 7-inch free-float M-LOK handguard, 6061-T6 aluminum, black
• AR-15 A2 GI birdcage flash hider on 1/2x28 threads
• 5.56x45mm bolt carrier group, 9310 alloy steel carrier, Nitride finish
• Mil-spec AR-15 charging handle included

Barrel and Gas System

The 7.5-inch barrel is machined from 416R stainless steel in a government profile and finished in stainless, a corrosion-resistant surface that stands apart from the usual black-finished barrel. Its 1:7 twist rate is suited to a wide range of bullet weights in 5.56 NATO. The barrel runs a pistol-length gas system through a micro low-profile steel gas block sized for the .750-inch barrel diameter, and the low-profile block helps it sit cleanly beneath a free-float handguard. At the muzzle, 1/2x28 threads carry the included AR-15 A2 GI birdcage flash hider.

Upper Receiver and Handguard

The upper receiver is a billet unit machined from 6061-T6 aluminum and finished in anodizing, giving it a hard, wear-resistant surface that holds up to regular handling. It is paired with a 7-inch black free-float M-LOK handguard machined from 6061-T6 aluminum. As a free-float design, it leaves the barrel free of handguard contact, and the M-LOK slots give the builder room to mount lights, grips, handstops, and other accessories wherever the setup calls for them.

Bolt Carrier Group and Charging Handle

The included 5.56x45mm bolt carrier group features a carrier machined from 9310 alloy steel and finished in Nitride, a surface treatment that adds hardness and corrosion resistance and helps the carrier stand up to repeated cycling. Paired with it is a mil-spec AR-15 charging handle, completing the upper so it is ready to be matched with a compatible lower receiver.

Compatibility

This upper is built for AR-15 lower receivers chambered in 5.56 NATO. Gas tube details, forward assist and ejection port door configuration, and crush washer inclusion were not supplied with this listing and should be confirmed before purchase.

Follow all manufacturer instructions and safe handling practices.

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