Right now there is a plethora of off-brand and oddball shotguns on the market. Almost all of them are imported; off the top of my head, the only big domestic producers of scatterguns these days are Remington and Mossberg. I'm also leaving out Benelli and Beretta, as these guys have been importing shotguns for decades now.
Most of them are 5+1 capacity, as importing shotguns with bigger magazines is a 922r violation. As near as I can tell, every single one of them suffers from the same ridiculously long stock problem as do the Mossbergs and Remingtons, but with less recourse to correct it.
A lot of these guns are coming from Turkey, and I suspect the rest are coming from China. You don't see the Baikal shotguns from Russia much anymore. Chinese clones of shotguns have been around for a while; my second repeating shotgun was a Remington 870 clone with ghost ring sights. The big difference was the stock magazine tube held five rounds instead of four on the Remington. Oddly enough, Remington now makes basic 870 variants with 5+1 capacity.
http://www.savagearms.com/firearms/model/stevens320pumpThe Stevens 320 pump shotgun is imported by Savage Arms. I don't know where it hails from originally. I don't know if any aftermarket parts (such as magazine tube extensions) will fit it. They are very reasonably priced; I saw one at Walmart for under $200.00.
Stevens also markets the 350, which I believe is a Chinese clone of the Ithaca 37 with ghost ring sights. They were previously imported by others.
http://www.winchesterguns.com/products/catalog/category.asp?family=021CThe Winchester Super-X Pump is the current branding of the old Model 1300. I list it as an oddball as they were off the market for several years, and are not produced int he United States. They are produced by FN of Belgium, I believe, and share parts commonality with the FN Police Pump shotguns imported in the 2005-8 timeframe. Their pricing is pretty competitive; Scheels in Utah had them for $300 even. A Winchester 1300 was my first repeating shotgun, and it was slick. I don't know if you can find different stocks or magazine tube extensions anymore, though.
http://www.jgsales.com/catamount-hd12-pump-action-shotgun,-12ga,-18.5-barrel,-new.-p-6223.htmlThe Catamount HD-12 is being imported by Century Arms. I think it's Turkish. The Catamount Lynx, with a pistol grip, is also available.
Tristar Sporting Arms is importing a bunch of shotguns from Turkey. I'm not sure if they're the same base guns as the ones Century is importing or not.
http://www.tristararms.com/tactical-shotguns.phpTEC-12 pump/auto; apparently a spindly-looking clone of the Benelli M3.
Cobra Tactical Pump:
"The Cobra Tactical is the foundation of tactical/home defense shotguns from TriStar. Cylinder bore with a 20" barrel, faux extended mag tube (5+1), and TriStar's signature Spring-Loaded Forearm. The Cobra Tactical is sure to be your best line of defense."Cobra Force Tactical.
Raptor ATAC semiauto. NOT a clone of the Benelli M1, as it's gas operated. Beretta clone perhaps?
CZ USA imports shotguns, the 612 Pump and the 712 Semiauto. CZ's quality is usually excellent, but you don't see these guns around very often.
http://cz-usa.com/product-category/shotguns/612 Pump:
"With the HC-P (Horde Control- Pump), you won’t be under-gunned when zombie hordes fill the streets." It looks a lot like some of the Turkish shotguns, and is priced to match. I wonder if it's from the same factory?
CZ 712 utility semiauto.
Mossberg International imports the SA-20 semiauto shotgun.
http://www.mossberg.com/products/shotguns/autoloading/mossberg-international-sa-2020 gauge.
Has anyone used any of these guns, as currently available? I'm not in the market, mind you, just curious as to the quality and experience. Can anyone sort out which shotguns are made where?
I just wish they'd pick a standard thread size for things like chokes and magazine tube extensions, so aftermarket accessories could be added. Also, why in the hell do shotguns always come with 14" lengths of pull? That's an inch longer than most people need, and most rifle stocks are shorter accordingly.
EDIT: Forgot Browning! The BPS is made in...Belgium? Or is it Japan? Anyway, it's available in a variety of dressings.
http://www.browning.com/products/catalog/firearms/finder.asp?f1=011B.410 bore, 5+1
10 Gauge Stalker
12 gauge Predator Hunter
Browning also offers the Auto-5, Maxus, Silver, and Gold autoloading shotguns. The Auto-5 is a classic design. The Gold and Silver are basically the same guns as the FN Self-Loading Police, I think; the Silver is in 12/20 gauge and the Gold is in 10 Gauge. I don't know about the Maxus.