Grovtec base cup accepts QD sling swivel. The Grovtec base cup can be threaded into the side cup holes on all MBA buttstocks (MBA-1, MBA-2, MBA-3 and MBA-4). Each buttstock has a side cup hole on both sides of the buttstock frame. The cup can be installed with an separately available installation tool or a 1/4″ Allen wrench. We also have a the QD swivels and complete kits available, as well as a Thumbscrew QD. See the install Tech Tip video in the Tech Tip tab.
This product contains only the Grovtec Threaded Base Cup.
*Sling and installation tool not included