Advanced Combat Bolt 6.8mm SPC II/224 Valkyrie

Best price

$54.99at Brownells

checked Sep 30, 2026

Buy at Brownells

Where to buy

Store	Price	Availability	Buy	Add to build
Brownells	$54.99checked Sep 30, 2026	Check store	Buy at Brownells

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About this part

The Advanced Combat Bolt 6.8mm SPC II/224 Valkyrie is an AR-15 bolt carrier group from LWRC International. One store lists it, Brownells at $54.99.

Fits and works with

Bolt: 6.8 SPC / .224 Valkyrie · Bolt carrier groups

Specifications

Manufacturer: LWRC International
Platform: AR-15

From the manufacturer

Upgraded Design For Increased Durability & Dependability

Updated design of the standard AR-15 bolt features a fully supported breech face and a dual-spring extractor system for extra strength and reliability to handle the 6.8 Remington SPC II or 224 Valkyrie cartridge. Machined from an extremely hard steel alloy normally used in high-stress/heat applications like race car transmissions, then shot-peened and x-rayed for flaws before plating with a nickel-boron (NiB) coating. NiB coating significantly reduces friction coefficient, so the bolt is less likely to be hung up by fouling, and wear-resistance is greatly enhanced. Super-slick surface makes cleanup easy because carbon and gunk have a hard time sticking to it.