This is the B&T BWC9 folding pistol caliber carbine. It accepts an Sig P320 FCU (the serialized part, not included in this sale). It is new and unified.
More info: https://bt-usa.com/products/bwc9/
Note: the Aimpoint Acro P2 is NOT included. However, I do have an Acro P1 that I'll include for an additional $300 (making the total $1850).
Price includes shipping. Payment: PP F&F or Zelle. Sorry, no trades.