ANDERSON MANUFACTURING AM-15 RIFLE IN GOOD PRE-OWNED CONDITION. CHAMBERED IN 5.45X39 WITH 16" VOODOO 1:8 TWIST BARREL, ADAMS ARMS PISTON SYSTEM, ADAMS ARMS BOLT CARRIER GROUP, 4-12 SCOPE, AND AFTERMARKET TRIGGER. Notes: Anderson Manufacturing AM-15 5.45 Rifle With Adams Arms Piston System. This Anderson Manufacturing AM-15 is a customized AR-style semi-auto rifle chambered in 5.45x39. It features a 16" Voodoo Innovations barrel with 1:8 twist, Adams Arms piston system, Adams Arms piston bolt carrier group, aftermarket trigger, adjustable stock, railed handguard, and mounted 4-12 scope. The Adams Arms piston setup is designed to run with their proprietary piston carrier system, keeping the action cleaner than a standard direct-impingement setup. The 5.45x39 chambering is less common on AR platforms, so this is a more specialized configuration. Includes rifle, optic, and magazine as shown.