Weaver SPR Thumbnut Optics Mount — 1in Tube, 1.5in Height

Description

Designed for AR-style rifles, the Weaver Thumbnut SPR (Special Purpose Rifle) optics mount secures 1-inch scope tubes to Picatinny/Weaver rails while providing a forward cantilever for optimal optic position on the receiver. The mount uses an integral recoil lug base to aid repeatable return-to-zero and two thumb-nuts for tool-less mounting and removal. Constructed from aircraft-grade aluminum, the design balances minimal weight with durability for use on modern sporting rifles.

Key Specifications

• Mounts a 1-inch scope tube for legacy and compact optics.
• Mount centerline height is 1.5 inches from the bottom of the base to the ring centerline.
• Cantilever forward measures 0.809 inches for forward optic positioning.
• Overall length is 5.375 inches for compact cantilever footprint.
• Weight is 0.414 lb for minimal added mass to the platform.
• Material is 6061-T6 aluminum for a strong, lightweight mounting solution.
• Interfaces with Picatinny/Weaver rails for broad compatibility.
• Features an integral recoil lug base to support improved return-to-zero capability.
• Provides tool-less thumb-nut clamping for rapid attach/detach of optics.
• Elevation is set at 0 MOA for a level mounting platform.

The Weaver Thumbnut SPR mount is a straightforward, purpose-built option for shooters who need a reliable interface between optics and AR-style platforms. Its cantilevered layout and integral recoil lug simplify optic placement and repeatable performance while the thumbnut system enables quick changes in the field or at the range. The mount’s compact profile and aluminum construction make it suitable where low weight and secure mounting are priorities.