Finally one of you

[u/Zen_Bonsai]

Ok ok. Im new. Like I got my license in the mail yesterday new.

I know almost nothing. Although I already know that those who know don't like this gun. Ok. But it's my first piece, and I got it for free from a friend by helping them out, and it hasn't seen a single shot fired yet. Brand new. I cut the tag off today.

...it's a Federation SPM-12

I've got questions. Go easy on me.

1) I leaned in my gun safety course that I match the head stamp with the data stamp. But wtf, I can't find the data stamp. Unless the info is buried within the serial

number I don't know what ..inch (?) of the shell is. And I feel like it's not cool to share the serial number? Online searches assume 3" but I need to be sure.

2) Even though I got this second hand, why can I find a manual online??

3) What the heck is this switch for in the second picture?

4) I assume these are my chokes in the third picture. I don't really know how to differentiate them. Whatever comes stock has this, I assume flash suppressor (see pic 4), seemingly welded to the stock choke. How do I know which choke is which and transfer the flash suppressor?

[u/Zen_Bonsai → u/[deleted]]

Wow thanks for the detailed reply!

I did see some notches on the chokes so I'll investigate that when I get home.

The breacher choke sounds oddly tactical..don't think I'll be shooting door locks anytime soon. I do hope to hunt grouse- often close range obvs so maby I'll leave it in place of it's the least restrictive?

Is it easy enough to find out and complete a full disassembly?

The lock in battery explanation you offered is a bit foreign to me. Is this also the reason the pump can't stay back and automatically moves forward via spring? I remember in the safety course the shotgun had a button that had to be pressed in to action the pump. Maybe this is what you're referring to? I thought that was actually burdensome and I like that I can just action it without a button. Sucks that this means it's not as reliable.

I haven't chambered a round yet, so I'll try to be cognizant of making sure the pump gets fully extended