Davidson Defense Timberline 18-inch Mid-Gas 1:10 .308 Win AR-10 M-Lok Rifle Complete Upper Build

Timberline 18-inch .308 Winchester AR-10 Complete Upper

The Timberline is built around an 18-inch "Scrubber" barrel chambered in .308 Winchester, with a contour profile finished in manganese phosphate. It's paired with an LR-308 billet upper receiver machined to the DPMS low-profile pattern. It pairs a 15-inch "Friz" LR-308 low-profile M-LOK handguard with a GI-style birdcage flash hider at the muzzle, running on a mid-length gas system. A Recoil Technologies LR-308 bolt carrier group and ambidextrous charging handle round out the upper, giving the buyer everything needed on the upper side.

Key Features

• "Scrubber" 18-inch .308 Winchester barrel, 1:10 twist, manganese phosphate finish
• Mid-length gas system with micro low-profile steel gas block
• LR-308 billet upper receiver, DPMS low-profile pattern, no forward assist
• "Friz" 15-inch low-profile LR-308 M-LOK handguard
• GI-style birdcage flash hider, compatible with .308, 7.62x39, and .300 Blackout
• Recoil Technologies LR-308 bolt carrier group, nitride finish
• Ambidextrous AR-10/LR-308 charging handle included

Barrel and Gas System

The "Scrubber" barrel runs 18 inches long, chambered in .308 Winchester and built from 4150 chrome moly vanadium steel with a manganese phosphate finish and contour profile. It carries a 1:10 twist rate and a 5/8x24 muzzle thread. Gas cycles back to the action through a mid-length system, running a stainless steel mid-length gas tube and a micro low-profile steel gas block sized to a .750-inch journal.

Upper Receiver and Handguard

The upper receiver is a billet unit built to the DPMS low-profile pattern, finished in Type III hardcoat black anodizing and machined without a forward assist. The ejection port door ships assembled. Over the barrel sits a 15-inch "Friz" LR-308 low-profile handguard, using an M-LOK attachment system along its length.

Muzzle Device

Capping the muzzle is a GI-style birdcage flash hider, listed as compatible with .308, 7.62x39, and .300 Blackout. It threads onto the barrel's 5/8x24 pattern and is secured with the included 5/8-inch black crush washer.

Bolt Carrier Group and Charging Handle

A Recoil Technologies LR-308 bolt carrier group is included, finished in nitride and listed for use across .308 Winchester, 6.5 Creedmoor, and .243 Winchester. An ambidextrous AR-10/LR-308 charging handle rounds out the upper's operating components.

Follow all manufacturer instructions and safe handling practices.

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