Mfg'd by us (DAW) on a Special Weapons, Inc. SW5 9mm receiver. It has 3 lug and threaded barrel for silencer applications. Includes collapsible stock as shown. Lower is SEMI-AUTO in both E and F positions. Includes one magazine. A $200 NFA tax will be required for non-SOT dealers. We can provide a silencer for this if desired for $450 (thread on style) or $525 (3 lug style) plus additional $200 NFA tax.