Bought a combo but didn't want the single Barrell. I dont know enough about these other than it's a little rough and priced accordingly. I shot 1 round of trap and broke 25 with it so I can say with certainty that you will never miss with it because I never did. The ejector worked fine. Please ask questions and I can send more pics. $1500 + shipping
I assumed they belonged there some purpose but what I can't say. I don't know about choke markings but based on appearance and performance on the 25 targets i shot I'd guess IM or F. There are 3 holes evenly spaced on the left side only. Purchased the set from estate so I didn't get to ask questions. I'd appreciate any input from those that know as I clearly don't.