This Nylon Tipped Tension Set Screw allows users to fine tune the fit of their upper with Aero's Gen 2 Lower Receivers. Achieve a tight fit with any standard AR15 upper receiver by inserting the screw into the grip tang of the Gen 2 Lower Receiver and tightening against the upper receiver until there is no wobble between the 2 parts.
Size: 1/4-28 x 1/2
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