870 barrel won't fit on grizzly mag fed shotgun

olympia

olympia

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Hey folks, please help. I bought a grizzly mag fed shotgun receiver and slowly put it together as I bought part. I received the barrel today and when I install it, the end of the mag tube does not reach that ring under the barrel to enable me to screw on the mag cap, do I have to buy another part?
 

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That receiver is set up for the 8.5" (or shorter?) barrel. Either get one of those, get a new mag tube, or get someone to make you a custom extender so the barrel will fit properly.
 
Any standard Remington mag tube would work, but I think they are either brazed or silver soldered in place. You would need an oxy-acetylene torch to replace the tube, assuming the Grizzly tubes are held on the same way a real Remington tube is.

If this is beyond your skills, or you don't want to pay a gunsmith to do it, then you need to find the original shorter barrel.
 
olympia said:
Do you think an 870 mag tube extension might work?
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No.

You need a straight piece of pipe that extends beyond your barrel ring and that is threaded for a magazine tube cap. A mag extension would not have a way to affix the barrel cap on the end, and the threaded joint would interfere with the pump slide.
 
Man you got taken if they didn’t tell you it only takes 8.5” barrels. Cut your losses and buy a new shotgun if you want to be able to use standard Remington barrels.
 
The last run of Grizzly’s had the 8.5” and 12.5” models with short mag tubes like that, only the 14” had standard length mag tubes. The old models only had short tubes on the 8.5”, why Canam changed the mag tube length and barrel ring is beyond me.

OP, your options are buy a 8.5” barrel or have a smith remove and re solder the barrel ring you have on that barrel so it fits that receiver. It can’t be used on any other standard 870 if it’s moved.
 
The barrel tapers wider toward the receiver, so removing it and re-soldering it would involve machining the ring to keep the alignment with the tube on a constant plane. I honestly would not try this - replacing the mag tube would be a FAR easier piece of work.

If the OP can get a trashed 870 receiver, he could rob the mag tube. If it's not dented up, it would work fine. They basically do not wear out. It takes a gunsmith (or anyone else competent with firearms and an oxy torch) to change the tube, but at least nothing has to be machined to fit.
 
BIG SHOOTZ said:
All answers resort back to mine,, GET A SHORTER BARREL.
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Good luck with that. No one with an 8.5” barrel will sell it as nothing else will fit their receiver. They’d be in the same situation as the OP.

A Dlask barrel would be about his only option and they don’t list separate 8.5” barrels on their website, only as complete shotguns which are out of stock.
 
I'm with Claven on replacing the mag tube, some sort of custom extension would also work if you no anyone that works in a machine shop.
I'd try and find someone with a norinco receiver and extension or just buy the next one that pops up for a fair price and cannibalize it for parts.
 
Honestly the easiest and likely the cheapest solution is to sell that and buy on with a reg length mag tube, I bet replacing the mag tube would be more expensive once you factor in parts and the cost for a smith to silver solder it on. That is unless the OP has the ability to do that himself.
 
Butcherbill said:
Honestly the easiest and likely the cheapest solution is to sell that and buy on with a reg length mag tube, I bet replacing the mag tube would be more expensive once you factor in parts and the cost for a smith to silver solder it on. That is unless the OP has the ability to do that himself.
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+1 Even if he did the work himself it would need to be refinished.
 
Perhaps contact the dealers that originally brought these in and maybe you’ll get lucky and find someone that has the 8.5” barrel that fits this receiver. It’s possible that a warrantied gun was returned and made into spare parts. Then either sell or keep it, if you get that lucky.
 
I presume you bought this with out the barrel, If not just put the short barrel on and get a different gun if you want a long barrel.
Lots of guys would just trade you, I think the 12 in is a better gun, the 8.5 in is a nice closet gun, but nothing on them is interchangeable with a standard 870 .
The mag model is a bugger to carry as the balance point is the mag feed and you can't carry them like that. Fine with a strap.
As the tube has no internals, the easy way is find the remains of a rem, or nork tube, cut off at right length, machine a steel tube that fits in side both, clean inside of tubes, tin and solder together. I have never tried it, but I think trying to remove that tube will turn into a wreck, thou than you could fit a new tube to the frame then.
you just end up with a standard 870 knockoff.
 
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