BudsGunShop.com - Rock Island Armory TK105 Traditional 20GA Single S

Ok I'm on the chat with RIA and this doesn't include ANY chokes rifles or otherwise but it WILL safely fire Slugs.
Foster slugs will probably get you the best accuracy as this is a smooth bore shotgun though

Randy i Just spoke with RIA they said it does not come threaded for chokes period, they also said all of their shotguns ate smooth bore.
And as to your answer on the Glock FS look at the glock page I linked to Glock CLEARLY SAYS FS= FRONT SERATIONS. That's not me guessing that's stated by the manufacturer.

RIA says it comes with a Slug choke now does that mean it rifled or just a cylinder choke I will give you the advice that at 5.18 LB it will recoil bad IE kick like a mule If you can swing it a 20 ga semi auto will have much less recoil and you can make it a single shot by either giving him 1 shell at a time or blocking the mag tube

In buds item description it says " Specifications:
Choke Tubes: Slug"
I'm assuming they mean it includes a rifled choke,
But I couldn't find any other sites that list this as an included item
support@armscor.com or using the chat feature below
armscor.com/hs-search-results