I'm the opposite of that . I got my first shotgun when I was 9 . Didn't own a high power rifle until I was in my 50's .
First off is find something that fits him , as already said . Also safety location . I bet most are on top for right or left handed people , but just something to check .
Second , don't base the gauge on recoil alone . Think pellet count / shot volume .
Chances are in a " shot " situation he won't even feel the recoil .
Then grade of the gun , then brand .
Sounds like a field grade would be a great choice .
Then chamber / what shells it will take , and what barrel options there are .
I have an older ( 2nd gen ) Mossberg 835 Ulti-Mag Turkey in Realtree all purpose gray .
I have a rifled barrel with a scope rail in the same camo pattern for it too .
Quality firearm , hands down . 26" ported barrel with threaded chokes .
shoots 2 3/4 , 3 and 3 1/2 .
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Remington is another great option . 870 field grade , black synthetic . It has a safety mounted down by the trigger guard . I like top of barrel location . Top of barrel , I just slide my thumb up , bang . Trigger guard I have to roll my hand around the bottom to use it , get my finger back on the trigger . He might not have trouble , but make sure he operates the safety ( unloaded ) with it shouldered to see what he thinks .
Save the Wing Master for later in life .
So pump
12 ga
Camo or black synthetic stock
Chamber up to 3 1/2 " shells .
Also ,, been a long time since I looked at or bought a shotgun . Back then the barrels weren't compatible with steel shot for waterfowl . Not sure what it's like now . Maybe they all spec out for lead or steel .
Great choice too . Early 500's were prone to issues . The first of the " corrected " ones were 500A . I had a 500A and also bought a powder coated , ported , rifled slug barrel for it . Only gun I ever sold , and still regret it to this day .
That was years ago . In today's market , Mossberg is a quality brand .
That first shot gun at 9 years old ? My Grandpa on my Dad's side J Stevens single 12 ga .
Bought out of Sears Roebuck catalog . 1920's .
I redid the wood on it , and had it professionally reblued years ago . All the flats filed clean and square .
I have the original cleaning kit for it with the bag , and a leather boot that ties on with a foam insert . Only owned by my Family .
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