Our adapter will mate the popular Magpul/KDG ACR buttstock to your SIG SG550, SG551, SG552, SG553, SG556 or SG522. The telescopic buttstock with cheekriser will give you a lot of additional adjustabilities, so you can configure the rifle to you very own needs.
The hinge has a built in locking mechanism, making sure the stock stays folded when it has to while maintaining all operational features.
The design is the lightest, yet as strong or stronger as other options on the market and looking at worldwide ACR stock delivery problems following it’s discontinuation it will probably be the last run we’ve made. The adapter is CNC machined from aerospace grade aluminium and mil-spec type III class 2 anodized matte black.
US customers please purchase our items at JDI Firearms Inc.