Grovtec Shotgun Locking Swivel Set for Mossberg 500 12 ga Black

Sturdy, all-steel, quick-detach swivel system for pump and semi-auto shotguns lets you attach or remove a sling as needed or even use the same sling on several shotguns. Made entirely in the U.S.A. from the finest quality materials, with no plastic parts to wear out and let you down in the field. Replacement magazine cap has integral swivel stud with ¾" screw-in stud for the buttstock. Pair of 1" swivels attach to studs and lock down with knurled cylinder nut to prevent accidental opening. Mfg: Grovtec Us SPECS: Steel, blued, semi-gloss finish. Each set includes magazine cap with stud, ¾” wood screw rear stud, (2) locking 1” swivels, (2) spacers, and instructions. Fits 12 gauge only.