Davidson Defense Iron Storm 18-inch Mid-Gas 1:10 .308 Win AR-10 M-Lok Handguard Rifle Upper Build Kit

Iron Storm 18-Inch Mid-Gas 1:10 .308 Win AR-10 M-LOK Handguard Rifle Upper Build Kit

The Iron Storm Upper Build Kit is built around an 18-inch .308 Winchester "Scrubber" barrel with a mid-length gas system, a billet LR-308 upper receiver in the DPMS low profile pattern, and a Guntec 12-inch M-LOK handguard. BCG and charging handle are not included.

Key Features

• 18-inch "Scrubber" barrel, 4150 CMV steel, contour profile, 1:10 twist, Manganese Phosphate finish
• Mid-length gas system
• Billet LR-308 upper receiver, DPMS low profile pattern, Type III hardcoat black anodized finish
• Guntec 12-inch ultra-lightweight thin free-float M-LOK handguard with monolithic Picatinny top rail
• Birdcage flash hider on 5/8x24 threads with 5/8-inch black crush washer
• BCG and charging handle are not included.

Barrel and Gas System

The 18-inch "Scrubber" barrel is machined from 4150 chrome moly vanadium steel in a contour profile with a Manganese Phosphate finish and a 1:10 twist rate suited to .308 Winchester. It runs a mid-length gas system through a stainless steel gas tube and a micro low-profile steel gas block with a .750-inch diameter. At the muzzle, 5/8x24 threads carry the birdcage flash hider, secured with the included 5/8-inch black crush washer.

Upper Receiver and Handguard

The upper receiver is a billet LR-308 unit built to the DPMS low profile pattern with a Type III hardcoat black anodized finish, and the ejection port door ships assembled. The forward assist is not included on this upper. It's paired with a Guntec 12-inch ultra-lightweight, thin free-float M-LOK handguard featuring a monolithic Picatinny top rail, finished in black.

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