Windham's Multi-Purpose Carbine (MPC) is the step above the SRC, featuring improved furniture and a flat-top upper receiver with Picatinny rail. Built in Windham, Maine by the same workforce that previously manufactured Bushmaster rifles. Type: Rifle Action: Semi-Automatic Caliber: 5.56x45mm NATO Capacity: 30 Year introduced: 2012, USA Weight: 96 oz Overall length: 32.5" Status: Active Intended use: Home Defense, Service