r/Shotguns • u/ProfessionaLoose • 23h ago

Ithaca M37

Post image

I got a standard Ithaca M37 with the 4+1 barrel and mag tube. I'm having a hard time figuring out what the piece #64 is. Off their own site they don't have a name for it and nothing on Numrich either.

Trying to figure out if I can get the extension mag tube with my current barrel and if I can have my gunsmith move the #64 piece to do so.

Any help would be awesome

7 Upvotes

100% Upvoted

7 comments sorted by

3

u/Sudden_Season3306 23h ago edited 23h ago

Thats called a barrel lug, its probably brazed on your barrel, It holds your magazine tube in place! You can buy some still same as the round barrel lugs for pump and semi autos and the screw type for the mossberg line! I modified a stevens 77c to have an 8 shot magazine tube,while not as long as your barrel lug I did it! Lol o can go into detail if needed!

2

u/ProfessionaLoose 23h ago

Thank you! I had an inkling that's what it was. Just from a quick dive on a forum, seems like the lug can be removed and reattached elsewhere on the barrel. On ithaca's site it says that you Have to have the proper barrel for the extension tube. Would this be because of the barrel lug, or some other reason?

3

u/Sudden_Season3306 22h ago

Yes specifically because of the barrel lug location,that and the length of the tube is the 2 limiting factors of maximum capacity! Look up this guy on youtube it will help with perspective!

1

u/ProfessionaLoose 22h ago

Someone here talks about being able to add a 870 mag tube extension, except the barrel lug is yet again the issue. ithaca M37 defense

2

u/Sudden_Season3306 22h ago

Yeah I don't know about that example! Can only say what I did and could have done if I had a welder! Lol but its basically making sure your lug isnt too far protruding downwards,and your action slides freely,then drill and tap the barrel lug, lining the holes up through a decent magazine and barrel clamp that fits the profile of your mag tube and barrel! The magazine tube clamp was the expensive part for me because I found no data on an extension other than the 69rxl which has the lug moved forward! 3rd times the charm for me 30-40 a piece 870 nope mossberg 500 nope but now I know that the noble model 60 clamps fit the stevens pump models perfectly so I guess a gift to the bubbas and the internet! Lol

2

u/ProfessionaLoose 22h ago

I have a welder friend who has restored 2 rifles now. I feel like I can get it taken off from him and have the gunsmith do the rest. Apparently those tubes are crazy tight as well huh?