It fires one round and when you eject the shell the arms let's go of the slide when you try to put in the next round. Had it for 15 years and know little about it. Figured you guys know your old guns better than I.
It sounds like you have a broken action bar on your firearm. If you break the gun down I bet the action bar (or slide) is in two pieces. You refer to it as arms in your post. The action bar and for end are one piece.
Bob I'll break it down and try to get some inside pictures. By arm I meant the bar attached to the pump handle. Which looks slightly bent in the photo. I took it all apart and didn't notice anything broke or wrong but I can shoot me not fix em.
What year is that Stevens? The Poly-Choke looks exactly like the one the original owner put on my 1926 Model 12 back in the 50s (according to legend...).
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"Arms are the only true badges of liberty. The possession of arms is the distinction of a free man from a slave." -- Andrew Fletcher 1698
Gerald if the action bar is not broken and is not staying in the groove in the receiver when you pump it it could be bent or kinked. This happens when some one has trouble opening the breach bolt after the gun has been fired and they try to force the bolt open, this is how the action bar can get bent. You have a good photo of your action bar in photo # 5 from left to right in your post.
If you need a new action bar for that model you will have to look on the firearm for the model number then you could search on the internet for people who deal in spare parts for older shotguns.
It is a Stevens Model 620 a John Browning design. The 620 was introduced in 1927, and manufactured into the 1950s. The earliest No. 620s had the lever safety inside the trigger guard. By 1930, the guns got the cross-bolt safety behind the trigger. If the gun is marked J. Stevens Arms Co., it was made 1946 or earlier. Savage Arms Corp. 1947 to 1954, and they began calling it the Model 620. For most of its production life the 620s had a checkered stock and forearm, but in the 1950s they went to a ringed forearm and the last year the Model 620 was offered it had a larger ringed forearm.
I would try Numrich Arms or Brownells. Parts may be hard to find. Depending on what is broken you may need a gunsmith who can repair what is broken or fabricate a part to replace what is broken. Another alternative would be to buy another gun like it and take the part you need and part the rest out.
Do a Google search for "stevens model 620 parts." I've been successful finding old parts on the various Internet forums for the "gun cult or sub-cult" of your choice--there's a forum for everything imaginable out there, and there's always e-bay (parts only--they believe guns are "icky")
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"Arms are the only true badges of liberty. The possession of arms is the distinction of a free man from a slave." -- Andrew Fletcher 1698
Youtube is very helpful for people who want to fix things for themselves. I just finished field stripping and installing the recoil buffers and action spring in my late fathers Ithaca 51 autoloader, a detailed Youtube video was very helpful and saved me a lot of time doing it I am sure. In the last couple of years I have rebuilt the carb on a Lawn Boy two stroke push mower and installed a new friction disc in my Ariens snowblower. Without the aid of the info in the Youtube videos I would have turned both jobs over to a repair shop.
Thanks for the video. That's the same video I used a while back to strip it down. The only issue I see is the bent pump bar. I'll try to straighten it, if it resolves the issue I'll try to find a new one.
