Fire arms and fire arm components and accessories, namely, clamps for securing shot magazine extension tubes to barrels, sling loops, mag extensions, muzzle handguards, vertical fore grips, light mounts, cheek risers for rifle and shotgun butt stocks, picatinny rails, rail adaptors, night vision mounts, sling adaptors, folding adaptors, buffer tubes, bench rest die plates, ergonomic hand grips, baffle-bolt stops, castle nuts, swivel studs, recoil pads, cheek rests and chassis stocks, ed barrels, magazines and stocks, shotgun stocks, rail grabbers, adaptor bars, ghost ring sights and, sight bead