Stuart, I think there is some confusion as the UPC code and model number did not change with the Gen change. Buds inventory Manager should also have an invoice of which Gen they received from their distributor. If not, Buds will need to take a serial number off of this batch and confirm with PW Arms exactly which Gen they are selling. LiveChat (available from 9AM to 9PM 7 days a week), the "Blue chat now" button at the bottom right of the page, or phoning at (859) 368-0371 (available 9AM to 9PM EST Monday through Friday).

the problem is most companies don't use the terms GEN anything that is a Glock thing here are the specs for this UPC PW ARMS AR12 12GA AR STYLE 20″ SHOTGUN
The factory new AR12 semi-auto tactical 12GA. shotgun designed and perfected by AR57 in Turkey, each comes with a full one year warranty, 2 x 5 Rd. Magazines, Manual and Cleaning Kit. The Hand Guards are Aluminum for strength and the bolt and carrier are now chrome moly along with the fire control group and charging handle. Has upgraded fixed pistol grip and fixed stock as shown in the picture.
*will take MKA-1919 extended magazines
The AR12 shotguns are designed to be a multi purpose shotgun and fill the needs of our Tactical / Home Defense , Hunting, and Sporting customers. Centered around the very popular AR15 platform you will feel very comfortable with feel & layout of the system . Magazine fed allows for the quick change of ammo and is great for a wide variety of roles. Unlike similar shotguns these have been built to work with a wider variety of high & lower power shells . The shotgun is chambered for 3 -inch and has a 20-in barrel with a manual safety. Designed for tactical use with its AR platform, steel barrel this shotgun is made with performance and durability in mind. The shotguns are backed up by a one year warranty.
Additional features compared to similar/Competitor products:
The receiver/frame is thickerthan similar Shotguns on the market.
The trigger parts are machined from solid stock, not investment cast

This is Gen2