Components

Build Kit Includes:01-501: 16" 5.56 M4 Carbine Contour Barrel Chambered 1:8 Twist02-201: 5.56 Enhanced Bolt Carrier Group AR-15 Nitride03-110: 15" Super Slim Gen II Keymod04-301: AR-15 Lower Parts Kit Complete Luth-AR OEM04-306: AR-15 Ambidextrous...

Build Kit Includes:01-501: 16" 5.56 M4 Carbine Contour Barrel Chambered 1:8 Twist02-201: 5.56 Enhanced Bolt Carrier Group AR-15 Nitride03-110: 15" Super Slim Gen II Keymod05-774: AR-15 Upper Receiver Assembled - Anodized Black04-301: AR-15 Lower Parts...

Nobody loves a heavy handguard, which is why ACME is proud to present this super lite M-LOK handguard. Built for rugged duty, but priced to be affordable, upgrade your existing rifle or complete your build with the flexibility of a M-LOK system, and the...

Barrel: 18" 4150 Black Nitride Heavy BarrelTwist: 1:7Caliber: .223 Wylde17" Free Float HandguardACME AR-15 Upper Receiver ACME 5.56 Mil-Spec Bolt Carrier Group AR-15 Nitride C158 *Picture might show optional accessories

Barrel: 18" 416R Stainless Steel Heavy Barrel Twist: 1:8Caliber: .223 Wylde17" Free Float HandguardACME AR-15 Upper Receiver ACME 5.56 Mil-Spec Bolt Carrier Group AR-15 Nitride C158 *Picture might show optional accessories

Barrel: 18" 4150 Parkerized Heavy BarrelTwist: 1:24Caliber: 450 Bushmaster17" Free Float HandguardACME AR-15 Upper Receiver Tool Craft 458 / 450 Mil-Spec Bolt Carrier Group Nitride     *Picture might show optional accessories

Barrel: 18" 416R Stainless Heavy BarrelTwist: 1:24Caliber: 450 Bushmaster17" Free Float HandguardACME AR-15 Upper Receiver Tool Craft 458 / 450 Mil-Spec Bolt Carrier Group Nitride   *Picture might show optional accessories

Barrel: 16" 4150 Parkerized Heavy BarrelTwist: 1:14Caliber: 458 SOCOM12" Free Float HandguardACME AR-15 Upper Receiver Tool Craft 458 / 450 Mil-Spec Bolt Carrier Group Nitride   *Picture might show optional accessories

Barrel: 16" 416R Stainless Steel Heavy BarrelTwist: 1:14Caliber: 458 SOCOM12" Free Float HandguardACME AR-15 Upper Receiver Tool Craft 458 / 450 Mil-Spec Bolt Carrier Group Nitride   *Picture might show optional accessories

Barrel: 18" 416R Stainless Steel Contour, Spiral FlutesTwist: 1:8Caliber: 6.5 Grendel17" Free Float HandguardACME AR-15 Upper Receiver ACME Charging Handle Tool Craft 6.5 Mil-Spec Bolt Carrier Group AR-15 Nitride *Picture might show optional...

Barrel:  18" ParkerizedCaliber: 350 Legend12" Super Slim Free Float Handguard5.56 Mil-Spec Bolt Carrier Group AR-15 Nitride C158 *Picture might show optional accessories

Just swap this drop in conversion with the bolt carrier group from your 5.56/.223 chambered rifle and you will be ready to shoot .22LR.  Ships with 25rd 22LR magazine.  For best performance use a round style hammer as notched hammers can cause...