The Aim Sports ATUVB Upper Receiver Vice Block Black Polymer AR-Platform is a purpose-built vise block that lets you secure your AR-15 upper receiver without risking damage. Made from durable, solvent-resistant black polymer, it supports both A2 carry-handle uppers and A3 flattop receivers while you torque barrel nuts, install or remove muzzle devices, or perform detailed maintenance. Integrated torque specification markings on the side keep critical values close at hand as you work.

This upper receiver vise block is ideal for home builders, armorers, and shooters who regularly service AR15, M16, or M4 pattern rifles. By fully supporting the receiver and spreading clamping pressure, it helps prevent crushing, twisting, or marring the upper while you clean, repair, or assemble components. Whether you are swapping barrels, changing handguards, or doing routine cleaning, this block provides a stable, repeatable setup that reflects Aim Sports’ focus on practical, reliable gunsmithing tools.

Key Features:

• Manufacturer: Aim Sports
• Model: ATUVB Upper Receiver Vise Block
• Color: Black
• Material: Solvent-resistant polymer
• Compatibility: AR-15 A2 and A3 flattop upper receivers
• Length: 4.5 in
• Ideal Use: Cleaning, repair, service, and assembly of AR-platform uppers
• Notable Feature: Integrated torque specifications guide on the block