Wheeler 156888 Delta Series Upper Receiver Vise Block AR-15/AR-10

The Wheeler 156888 Delta Series Upper Pic Rail Vise Block transforms AR-15 and AR-10 maintenance by providing secure, non-marring workholding that protects your upper receiver's finish. This precision-machined aluminum block eliminates the frustration of damaged components during barrel installation, muzzle device timing, and gas system work.

What Makes This Different

Unlike generic vise blocks that rely on receiver threads or magazine wells, the Delta Series block clamps directly onto the Picatinny rail system for maximum stability. The anodized aluminum construction distributes clamping pressure evenly across multiple rail slots, preventing deformation while maintaining a rock-solid grip. This approach eliminates the need for receiver extensions or awkward positioning that can damage your firearm.

Key Features

• Precision-machined 6061-T6 aluminum construction with Type III hard anodizing
• Universal compatibility with AR-15 and AR-10 platform upper receivers
• Clamps securely to standard MIL-STD-1913 Picatinny rail sections
• Non-marring contact surfaces protect receiver finish and rail slots
• Ergonomic thumb screws provide tool-free adjustment and positioning
• Compact 4.2-inch length fits standard bench vises without interference
• Matte black finish resists corrosion and provides professional appearance

Professional armorers and home builders rely on this vise block for barrel installations, muzzle brake timing, and gas block alignment procedures. The rigid platform eliminates movement during torque-intensive operations like barrel nut installation, where precise alignment determines accuracy. Competition shooters appreciate the clean, damage-free results when swapping barrels or adjusting gas systems between matches.

Technical Specs

• Material: 6061-T6 aluminum with Type III hard anodizing
• Dimensions: 4.2" L x 2.1" W x 1.8" H
• Weight: 8.2 ounces
• Rail compatibility: MIL-STD-1913 Picatinny specification
• Clamping range: Accommodates standard upper receiver rail heights
• Finish: Matte black Type III hard coat anodizing
• Country of origin: United States

This vise block represents the difference between amateur modifications and professional-grade results. The investment pays for itself by preventing costly receiver damage and ensuring precise component alignment that directly impacts accuracy and reliability.