if you use a pistol grip the thumb saftey is tough to reach for me. i preffer the saftey placement of the winchester over all three big names. trigger finger in front of the trigger for quick off and to the trigger. winchester 1300 just does not get the recognition but i feel is worth a good feel up before you buy. i think the action is just smoother and as for parts..... you can get anything you really need. it is just a little harder to turn it into a zombie gun but still can be done. i just decked out my deffender with all kinds of crap only to take it all off and put on a 12" standard style houge stock with a surfire forearm with light. simple functional and still light enough to lug around and manover easily.
i also have two mossbergs 500 and 590 as well as a remington police and a maveric basic pistol grig. remington has a better finish and seems more sturdy than all three, but i have over 10k rounds through my hunting 1300 and only broke one side of the slide and it still functioned fine. i don't know how long it was like this, i found it doing a full strip and clean (first time i did that in 20 years of owning it. maveric same as mossberg really and winchester my favorit.
i also have two mossbergs 500 and 590 as well as a remington police and a maveric basic pistol grig. remington has a better finish and seems more sturdy than all three, but i have over 10k rounds through my hunting 1300 and only broke one side of the slide and it still functioned fine. i don't know how long it was like this, i found it doing a full strip and clean (first time i did that in 20 years of owning it. maveric same as mossberg really and winchester my favorit.