Davidson Defense Conduction 20-inch Rifle-Gas 1:8 6.5 Creedmoor AR-10 M-Lok Rifle Upper Build Kit

Conduction 20-Inch Rifle-Gas 1:8 6.5 Creedmoor AR-10 M-LOK Rifle Upper Build Kit

The Conduction Upper Build Kit is built around a 20-inch 6.5 Creedmoor BC-10 barrel with a rifle-length gas system, an LR-308 billet upper receiver in the DPMS low profile pattern, and a Crest Series 19-inch M-LOK handguard. BCG and charging handle are not included.

Key Features

• 20-inch BC-10 6.5 Creedmoor barrel, heavy profile, straight fluted, 1:8 twist, Parkerized finish
• Rifle-length gas system
• LR-308 billet upper receiver, DPMS low profile pattern, Type III hardcoat black anodized finish
• Crest Series 19-inch low profile M-LOK handguard, DPMS low profile
• .308 smooth flash/sound forwarder on 5/8x24 threads, Nitride finish, with 5/8-inch black crush washer
• BCG and charging handle are not included.

Barrel and Gas System

The 20-inch BC-10 barrel is machined in a heavy profile and cut with straight fluting along its length, a treatment that trims rotational mass while still leaving enough material for heat management under sustained strings of fire. It carries a Parkerized finish and a 1:8 twist rate, suited to a wide range of 6.5 Creedmoor bullet weights rather than favoring only the lighter end of the spectrum. The rifle-length gas system runs through a stainless steel gas tube and a low-profile AR-15/LR-308 gas block with a .936-inch diameter, matched to the barrel's .936-inch gas block journal. At the muzzle, 5/8x24 threads carry the included .308 flash/sound forwarder, a smooth-style device finished in Nitride, secured in place with the supplied 5/8-inch black crush washer.

Upper Receiver and Handguard

The upper receiver is a billet-machined LR-308 unit built to the DPMS low profile pattern, keeping its external height closer to a standard AR-15 upper than a high-profile AR-10 pattern would. It's finished in Type III hardcoat black anodizing for durability, and the ejection port cover ships already assembled rather than as loose parts to install. The forward assist is not included on this upper. Over the barrel and gas system sits a Crest Series 19-inch M-LOK handguard, also cut to the DPMS low profile pattern for a consistent slim profile front to back.

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