Obsidian Arms Upper Receiver Vise Block AR-308 - OA-VBUA-308

Obsidian Arms Upper Receiver Vise Block AR-308

Secure your upper without a scratch—optimized for large-frame ARs.

The Obsidian Arms AR-10/AR-308 Upper Receiver Vise Block is a must-have tool for anyone working on large-frame AR builds. Precision-machined from high-density polyethylene (HDPE), this block provides a secure, non-marring hold on your upper receiver when clamped in a bench vise—preventing damage during barrel installations, maintenance, or optic mounting.

Designed to fit all standard AR-10/AR-308 upper receivers, this vise block includes locking pins for a tight, secure fit during high-torque applications. Lightweight, durable, and easy to use, it’s an essential tool for builders, armorers, or anyone maintaining their .308 platform.

Features

• Fits all standard AR-10/AR-308 upper receivers
• HDPE construction prevents scratching, marking, or crushing
• Locking pins included for secure hold during heavy torque use
• Lightweight and durable—ideal for professional or DIY builders
• Made in the USA

Specifications

• Material: High-Density Polyethylene (HDPE)
• Compatibility: Standard AR-10 / AR-308 Upper Receivers
• Includes: Vise Block and Locking Pins
• Weight: Approx. 16 oz
• Use: Bench vise tool for upper receiver maintenance and builds