Includes: - Billet Aluminum Upper Receiver of Your Choice - Lightweight 17" M-Lok Handguard of Your Choice - .750" Rifle Length Gas Block and Tube of Your Choice - Flash Hider of Your Choice - 18"...

Purpose: A rifle barrel guides and accelerates the bullet, using high-pressure gases from the fired cartridge to propel it forward. Its internal rifling imparts spin to the bullet for stability and...