Real Avid Lug-Lok Upper Vise Block Prepper and professional look you expect

and professional look you expect from 5

ensuring you stay dry in any situation

Designed for those who demand performance from their tactical gear

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Real Avid Lug-Lok Upper Vise Block Prepper and professional look you expectTraditional clamp style upper blocks fit poorly and can exert enough inward pressure to damage the receiver when applying torque to a barrel nut or flash suppressor. Thats bad design. So, we designed an upper block that leverages the strongest part of the gun the barrel lugs inside the star chamber. The Lug Lok is precision machined and precisely fits into all Mil Spec uppers. It mates perfectly with the barrel lugs, while allowing you to rotate the