Davidson Defense At The Helm 20-inch Rifle-Gas 1:8 6.5 Creedmoor AR-10 Rifle Full Build Kit

At The Helm 20-inch 6.5 Creedmoor AR-10 Full Build Kit

The At The Helm is a Full Build Kit built around a BC-10 20-inch SOCOM straight-fluted barrel chambered in 6.5 Creedmoor, finished in black nitride. It's paired with an LR-308 billet upper receiver machined to the DPMS low-profile pattern. It pairs a 19-inch LR-308 DPMS low-profile M-LOK handguard with an AR-15/AR-10 .308 GI birdcage flash hider at the muzzle, running on a rifle-length gas system. A Recoil Technologies LR-308 bolt carrier group, blind box ambidextrous charging handle, Recoil Technologies .308 Mil-Spec quality AR-10 Lower Parts Kit, buffer-system components, and a SOPMOD-style collapsible stock round out the rest of the rifle. The lower receiver is not included, leaving the buyer to select and supply that component separately.

Key Features

• BC-10 20-inch SOCOM straight-fluted 6.5 Creedmoor barrel, 1:8 twist, black nitride finish
• Rifle-length gas system with low-profile AR-15/LR-308 gas block
• LR-308 billet upper receiver, DPMS low-profile pattern, slick side, no forward assist
• 19-inch LR-308 DPMS low-profile M-LOK handguard
• AR-15/AR-10 .308 GI birdcage flash hider
• Recoil Technologies LR-308 bolt carrier group, nitride finish
• SOPMOD-style collapsible stock with integrated storage compartments and QD mounts
• Recoil Technologies .308 Mil-Spec quality AR-10 Lower Parts Kit and buffer-system components included
• Lower receiver is not included.

Barrel and Gas System

The BC-10 barrel runs 20 inches long, chambered in 6.5 Creedmoor and finished in black nitride with a SOCOM profile and straight fluting to shed weight. It carries a 1:8 twist rate and a 5/8x24 muzzle thread. Gas cycles back to the action through a rifle-length system, running a stainless steel rifle-length gas tube and a low-profile AR-15/LR-308 gas block with a .936-inch bore.

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 in a slick-side configuration without a forward assist. The ejection port door ships assembled. Over the barrel sits a 19-inch LR-308 DPMS low-profile handguard, using an M-LOK attachment system along its length.

Muzzle Device

Capping the muzzle is an AR-15/AR-10 .308 GI birdcage flash hider, threaded to match the barrel's 5/8x24 pattern and 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. A blind box ambidextrous AR-10/LR-308 charging handle rounds out the upper's operating components.

Lower Parts Kit and Buffer System

A Recoil Technologies .308 Mil-Spec quality AR-10 Lower Parts Kit covers the fire-control and lower-control internals needed once a lower receiver is on hand. Behind it sits a Mil-Spec heavy-duty six-position buffer tube, holding an LR-308 collapsible stock buffer weighing 3.76 ounces and an AR-10 carbine extra-power buffer spring made from 17-7 stainless steel. A standard AR-15 carbine castle nut and Mil-Spec AR-15/M16 receiver end plate secure the buffer tube assembly to the lower.

Stock

Capping off the rifle is a SOPMOD-style collapsible stock finished in black. It includes built-in storage compartments for small parts or batteries, along with integrated QD sling mounts for attaching a sling without extra hardware. It slides onto the six-position buffer tube included with this kit, giving the shooter adjustable length-of-pull for the final piece of the build.

Follow all manufacturer instructions and safe handling practices.

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

Lower receiver is not included.