Windham Weaponry Multi-caliber Upper Kit, Wind Kit-mcs1 Upper Kit 223/300bo

Windham weaponry's multi-caliber upper receiver assembly kit is designed as a unique upgrade for the ar15-type rifle, offering quick and easy caliber changes by simply switching out the barrel, and if necessary, the bolt/bolt carrier and magazine.Add the optic or iron sights of your choice, and this kit is "ready for the range." the barrel is chrome-lined and machined from 4150 chrome moly vanadium steel with a black manganese phosphate finish.The upper receiver is cnc machined from forged 7075 t6 aircraft aluminum with a hardcoat black anodize finish.The mcs 1 kit includes a complete upper receiver assembly with.223/5.56mm caliber m4 barrel assembly; integral railed forend; (with barrel release levers, and barrel retaining block).Additionally, a.300 blackout caliber barrel assembly is included allowing the change between.223/5.56mm caliber and.300 blackout caliber by utilizing the same bolt/bolt carrier and.223 magazines.The.223/5.56mm bolt/bolt carrier and.223 magazines are utilized.The.300 blackout caliber barrel assembly is complete with railed gas block, gas tube, and a2 flash hider.

Receiver Finish: Black Hard Coat Anodized
Type: Complete Gas Impingement
Caliber: 223 Rem,300 BO
Sights: None, Optic Ready
Barrel Length: 16"
Barrel Material: 4150 Chrome Moly Vanadium Steel
Barrel Description: Chrome-Lined
Barrel Finish: Black Phosphate
Receiver Description: 7075-T6 Aluminum
Handguards: Quad Rail
Handguard Finish: Black
Barrel Length Range: 16.00" to 16.99"

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