Real Avid Lug-Lok Upper Vise Block AR15 Short Sleeve Shirts Military impact requirements while providing

Military impact requirements while providing all-day comfort and a universal fit

Charge Time:  90

Replacement sealing rings made of silicone gel which fit most Sordin Supreme models

Keeps your expensive gear from getting lost or stolen

Real Avid Lug-Lok Upper Vise Block AR15 Short Sleeve Shirts Military impact requirements while providingADVANCED THINKING, AR15 UPPER BLOCK Traditional 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. That's 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