Real Avid Lug-Lok Upper Vise Block for AR-10

The Real Avid Lug-Lok upper vise block is a precision-machined tool engineered to engage the barrel lugs inside the star chamber rather than clamping on the receiver. It is designed for AR-10 style MIL-SPEC uppers to provide a secure, non-damaging mounting point when applying torque to barrel nuts, muzzle devices, or other upper-end components. The block indexes to the barrel lugs, permits rotation of the upper for access to different sides, and uses a lock knob and pins to maintain position under high torque. Built for bench gunsmithing and maintenance tasks, it reduces the risk of receiver deformation associated with clamp-style blocks.

Key Specifications

• The block is designed to precisely fit into the barrel lugs of MIL-SPEC uppers.
• The component is machined from 7075-T6 aluminum with stainless steel pins for durability.
• The overall dimensions are 1.40 x 5.70 x 16.60.
• The recorded height is 1.4000.
• The recorded width is 5.7000.
• The recorded length is 16.6000.
• The product model is listed as Lug-Lok.
• The finish/fit description is noted as fits into barrel lugs securely.
• Includes 2 vise pins and a lock knob to hold the upper at multiple working angles and prevent rotation.
• The item is described as a Lug-Lok upper vise block intended for AR-10 style rifles.

Robust, repeatable, and purpose-built, the Lug-Lok upper vise block simplifies upper-end maintenance by securing the strongest part of the assembly—the barrel lugs—rather than placing inward pressure on the receiver. Its precision fit and stainless hardware provide a stable platform for high-torque work, making it a practical choice for professional gunsmiths and serious enthusiasts who perform regular bench maintenance and assembly on AR-10 style uppers.