The Nienna 20-inch LR-308 Complete Upper Build from Davidson Defense combines robust construction with precision engineering for reliable shooting performance. Chambered in .308 Win, this upper build is optimized for accuracy across a variety of applications. It features a 20-inch HBAR barrel made from durable 4150 CrMoV steel, with a chrome and phosphate finish for added longevity. The 1:10 twist rate ensures stability with a range of .308 ammunition.
Constructed from 7075-T6 aluminum, the anodized black upper receiver enhances durability while allowing for seamless integration with LR-308 platforms. The micro low-profile gas block and LR-308 crown muzzle brake, both with a thread pitch of 5/8x24, provide excellent gas management and recoil control. Equipped with an aluminum charging handle, this upper build is ideal for gunsmiths seeking reliability and performance in their .308 rifle setups.
Caliber: .308 Win
Barrel Material: 4150 CrMoV
Barrel Thread Pitch: 5/8x24
Barrel Gas System: Rifle
Barrel Length: 20-inch
Barrel Finish: Chrome & Phosphate
Barrel Profile: HBAR
Barrel Twist Rate: 1:10
Upper Receiver Material: 7075-T6
Upper Receiver Finish: Anodized Black
Charging Handle: LR-308 Charging Handle Aluminum
Bolt Carrier Material: 9310 Alloy Steel
Bolt Carrier Finish: Nitride
Bolt Carrier: Nitride LR-308 Bolt Carrier Group
Gas Block Size: 0.75
Gas Block Name: Micro Low-Profile Gas Block for .750 O.D Barrel Steel
Muzzle Device: LR-308 5/8x24 Crown Muzzle Brake
Muzzle Device Finish: Nitride
Muzzle Thread Pitch: 5/8x24
Handguard Material: 6061-T6 Aluminum
Handguard Color: Black
Handguard Style: M-Lok
Upper Receiver Name: "Spectre LP" DPMS Style LR-308 Low Profile Stripped Upper Receiver
Barrel Name: 20" .308 WIN Heavy HBAR Barrel - Rifle Length Gas
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