The GrovTec Non-Detachable Locking Swivel Set (GTSW77) provides a permanent, mechanical sling attachment designed for hunting and sporting firearms. Constructed entirely from steel with a black oxide finish, the set includes a front machine screw stud with an internal counter-nut for forend installation and a rear wood screw stud for buttstocks. The permanently captured loops prevent accidental detachment and eliminate hardware rattle during field carry, securing standard 1¼-inch (31.75 mm) slings directly to the rifle stock.

Key Features

• Permanent Loop Attachment: Captures the sling loops permanently within the steel swivel body, removing the risk of accidental release or mechanical rattle in heavy brush.
• Machine Screw Forend Mounting: Utilises a threaded front machine screw with a backing nut, engineered for synthetic stocks or thin wooden forends requiring through-stock fastening.
• All-Steel Construction: Manufactured with full-steel components finished in corrosion-resistant black oxide for long-term outdoor durability.
• Standard Sling Integration: Sized precisely to accept standard 1¼-inch (31.75 mm) wide leather, synthetic, or webbed rifle slings.

Product Specifications

• Product Type: Non-detachable rifle sling swivel set
• Model Number: GTSW77
• Loop Size: 1.25 inches (1¼ in / 31.75 mm)
• Hardware Included: 1x machine screw forend stud with backing nut, 1x rear buttstock wood screw stud
• Material: Steel
• Finish: Black oxide
• Shipping Weight: Approximately 62 g (0.137 lbs)
• Power Requirements: None (fully mechanical)

Who is the GrovTec Non-Detachable Machine Screw Swivel Set for?

• Hunters traversing dense brush — provides a rattle-free, permanent non-detachable sling swivel assembly that weighs approximately 62 g, preventing accidental unlatching or mechanical noise during long treks through heavy cover.
• Classic, vintage, and sporting bolt-action rifle owners — provides a permanent through-forend mounting interface designed to secure standard 1.25-inch (31.75 mm) wide leather or webbing slings using an internal counter-nut and wood screw system.

Less suitable for: Slings wider than 1.25 inches (which will not fit the loops), 1-inch slings (which experience lateral play and require a 1-inch specific swivel set), lever-action rifles with tubular magazines (which require barrel-band mounting hardware), or pump and semi-automatic shotguns (which require magazine-cap swivel mounts).