Shop › PWS ENHNCD BFFR TUBE MIL SPEC GEN 2 PWS ENHNCD BFFR TUBE MIL SPEC GEN 2 $99.95 Primary Weapons Systems Enhanced Buffer Tube, Fits AR-15, Mil-Spec Receiver Extension, 6 Position, Ambidextrous Push Button Sling Points, Black, Includes Ratcheting Lock Castle Nut and Endplate EBT-RLCN-KIT Quantity: Add To Cart Added! Primary Weapons Systems Enhanced Buffer Tube, Fits AR-15, Mil-Spec Receiver Extension, 6 Position, Ambidextrous Push Button Sling Points, Black, Includes Ratcheting Lock Castle Nut and Endplate EBT-RLCN-KIT