Real Avid Lug-Lok Upper Vise Block Micro Cases Glass lens

Glass lens

25"(W) x 10"(H)

Powered by two 3V CR123A lithium batteries (included)

Powered by a single AA battery

The Blister Medic is the best of both worlds

Real Avid Lug-Lok Upper Vise Block Micro Cases Glass lensADVANCED 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