slp failure to feed issues

[squinty]

I have an SLP Mark One that just recently developed some problems with the magazine tube. Rounds don't seem to go into the tube smoothly, I can't quite get the eighth (2 3/4") shell into the tube - it goes in up to the rim but no farther - and rounds do not feed from the tube. Rounds extract from the chamber normally, and when I drop a shell into the ejection port and hit the bolt release the round feeds flawlessly into the chamber. But when I eject that chambered round, the next round in the mag tube just sits there and won't exit the magazine.

I spoke with a FN rep to see if there was some known issue he could help me with. He suggested that hand cycling may not be vigorous enough to cause the next round to feed, compared to the force of actually firing the gun. But in the past, rounds have always come out of the tube when I hand cycled with no problem, until now, so there has been some sort of change. He also suggested that it might be an ammo issue but this problem persists with several different varieties of ammo, and with ammo that has never been cycled through the gun before, and freshly loaded ammo. It happens no matter what I put in the shotgun.

Anyone else have a similar issue? If so, how was it resolved? Theories? Opinions? Guesses or speculations?

 

[orphanedcowboy]

When was the last time you pulled the shell stop and cleaned behind it? Hard to load magazine and failure to feeds can be traced to the trigger group, the shell stop or magazine follower/spring issues.

There is a little "hairpin" clip holding the pin in, dab some grease in the groove or put a white rag over it because it will shoot out of the groove never to be found again, once the clip is removed, using a small "allen" wrench, less than 3/32" inch, from the ejection port locate the pin hole and use the short side of the "allen" wrench to push the pin out, making sure you have one hand on the shell stop to relieve pressure, and then scrub thoroughly and re-install. If that doesn't do it, then teardown the magazine and check the follower and spring for irregular wear.

 

[squinty]

When was the last time you pulled the shell stop and cleaned behind it? Hard to load magazine and failure to feeds can be traced to the trigger group, the shell stop or magazine follower/spring issues.

There is a little "hairpin" clip holding the pin in, dab some grease in the groove or put a white rag over it because it will shoot out of the groove never to be found again, once the clip is removed, using a small "allen" wrench, less than 3/32" inch, from the ejection port locate the pin hole and use the short side of the "allen" wrench to push the pin out, making sure you have one hand on the shell stop to relieve pressure, and then scrub thoroughly and re-install. If that doesn't do it, then teardown the magazine and check the follower and spring for irregular wear.

The last time I pulled the shell stop was never...and you are correct sir it is gunked up. Scrubbed it with a breakfree soaked toothbrusk and then wiped it down with a clean rag, reassembled. Problem seems to have gone away.

 

[orphanedcowboy]

Well good deal, a little test firing is in order, if nothing else to waste some ammo. I always tell my wife I have to go check it out to make sure the problem is gone......