Lug-Lok Upper Vise Block™ - AR15

The Lug-Lok Upper Vise Block – AR15 is a precision-machined gunsmithing tool designed to securely hold any Mil-Spec AR15 upper receiver by engaging directly with the barrel lugs inside the star chamber. Constructed from non-marring, aircraft-grade aluminum, it eliminates the risk of damaging the receiver during high-torque operations. The Lug-Lok rod locks into the strongest structural point of the rifle, while the Lock Knob and dual Vise Pins ensure secure, adjustable positioning at multiple working angles. Ideal for AR15 assembly, maintenance and accessory installation, this upper vise block provides a stable, safe and repeatable hold without relying on external clamping.

• Precision-machined to fit all Mil-Spec AR15 upper receivers
• Engages directly with barrel lugs inside the star chamber for maximum strength
• Constructed from non-marring, aircraft-grade aluminum
• Eliminates risk of damaging the upper receiver during high-torque applications
• Lock Knob secures the rod firmly into position
• Dual Vise Pins allow for multiple working angles and prevent unwanted rotation
• Distributes torque through the steel barrel lugs, not the upper housing
• Ideal for AR15 building, maintenance and accessory installation
• Provides a stable, repeatable hold without external clamping
• Designed for safe, professional-grade AR15 gunsmithing and armorer work

The Lug-Lok Upper Vise Block for AR15 is a professional-grade gunsmithing tool engineered to provide the most secure and damage-free method for holding an AR15 upper receiver during high-torque applications. This tool sets a new standard in AR15 maintenance by eliminating the risk of damaging the receiver during barrel, muzzle device or handguard installation.

Unlike traditional clamp-style upper receiver blocks, which apply force to the outer surfaces of the upper and can cause distortion or cracking under pressure, the Lug-Lok Upper Vise Block is designed to engage directly with the barrel lugs inside the AR15 star chamber. This design allows the tool to harness the strength of the steel barrel extension lugs, which are the most durable structural contact points within the upper receiver.

The Lug-Lok rod is constructed from precision-machined, aircraft-grade aluminum, offering a combination of strength, durability and non-marring contact with the firearm. It slides cleanly through any Mil-Spec AR15 upper receiver and locks into the star chamber, where it mates securely with the barrel lugs. This direct lug engagement delivers unmatched stability, ensuring that torque is applied evenly through the most structurally sound part of the rifle.

Once the upper is engaged with the Lug-Lok rod, the Lock Knob ensures it remains seated during work, preventing shifting or dislodgement. The inclusion of two Vise Pins allows the user to hold the AR15 upper receiver at multiple optimal working angles. These pins prevent rotation under torque and offer precise positioning for a variety of gunsmithing tasks, including barrel nut installation, flash suppressor removal and accessory mounting.

The Lug-Lok Upper Vise Block is compatible with all standard AR15 Mil-Spec upper receivers and is suitable for professional armorers, gunsmiths or firearm enthusiasts building or maintaining AR-pattern rifles. Its design not only protects the upper from deformation or cosmetic damage but also ensures a safer and more controlled work environment during tasks that require significant torque.

Key features include:

· Precision-milled aluminum rod engineered for exact fitment with standard AR15 star chambers and barrel lugs

· Non-marring, aircraft-grade aluminum construction that protects the firearm's internal and external surfaces

· Direct barrel lug engagement to safely distribute torque through the strongest part of the firearm

· Lock Knob system to keep the rod and upper receiver firmly secured during use

· Dual Vise Pins to lock the upper at multiple working angles and prevent unwanted rotation during torque-heavy operations

· Compatible with all Mil-Spec AR15 upper receivers

The Lug-Lok design eliminates reliance on fragile or poorly fitting clamp blocks and provides a consistent, high-strength hold that is essential when building, maintaining or upgrading an AR15. The use of barrel lug engagement rather than external clamping ensures the receiver is never exposed to crushing forces or alignment issues.

For AR15 builders, armorers and technicians seeking a highly effective solution for securing an upper receiver, the Lug-Lok Upper Vise Block – AR15 provides industry-leading strength, precision and safety. It is the optimal tool for applying high torque to AR15 components without compromising the structural integrity of the upper receiver.