The Windham Di4B is a budget-accessible entry into the Windham lineup with a 16-inch chrome-moly barrel and a standard M4-style handguard. Built in the Maine facility to the same tolerances as higher Windham models but with simplified furniture to reduce retail price. Type: Semi-Auto Rifle Action: Gas-Operated Caliber: 5.56x45mm Capacity: 30 Year introduced: 2018, USA Weight: 6.8 oz Overall length: 32.6" Status: Active Intended use: Home Defense, Range