Adpatper for mounting the Bushmaster ACR™ stock on multiple firearms.
This adapter is quite versatile and will not only let you mount an ACR stock on any H&K or B&T with a UMP style hinge but also on any SB adapter with a UMP style hinge. That means it should work on for any MP5, LWRCI SMG, Stribog, Scorpion, Bren, etc that has an aluminum SB Adapter installed.
This adapter replaces the entire front half of the Bushmaster ACR™ stock so that it can work with the factory UMP/B&T/SB hinge. The rear half of the stock, cheek riser and battery storage cap are all transfered from the original part to the new adapter.
The HK/SB push button and roll pin will also be reused from your factory stock or brace and are not included.
When installed the stock will fold but it blocks the ejection port and will not lock folded.
This part is manufactured from Nylon using a process called Multi Jet Fusion or MJF. The parts are then sandblasted, dyed and shotpeened for a strength and finish that is comparable to injection molded nylon. The part is black throughout.
*Because this part is usable across so many platforms that can vary some fitting may be required. Mainly in the hinge pin area. Some of the guns use pins and some use screws with different diameters. The hinge hole may need to be drilled slighly larger to accomodate your setup. Forcing a pin or screw that is too big can split the hinge.