Hi, I have a 870 Express Magnum Syn. and I recently bought a top folding stock, 8 shot mag extension and forend pistol grip. I have done quite a few searches and couldn't find anything that touched on this question... I noticed that I still cannot fit more than 4 rounds in the tube because there are 2 bumps at the end that almost look like they were put there on purpose to restrict any extension. The extension tube installs without a problem, but the 2 bumps only allow 4 shells to be loaded. Anybody else have this problem? I want to just grind them off with a dremel, but what are the legal implications? Would this look very bad if a home defense situation ever did occur and I wound up in court? (And yes, I have read the 4 steps posted numerous places here for right way to handle the HD situation)
Take a dremel and file em off. It isn't illegal, your not creating an assualt rifle because you have a pump shotgun and not a semi-auto. As for the legal question if the gun is used in an HD situation I can't say. I personally wouldn't worry about it. Like many I give the standard response of rather wanting to be judged by 12 than carried by 6. Your defense could be that many other people have older 870s that don't have the dimples so why should you removing the dimples be any different than just buying an older 870? If anything the aftermarket mag extension itself would probably cause you more trouble. I have a 2 shot extension on mine and I'm not going to take it off. It makes it too much fun to go out and shoot.
I put extensions on both my SuperMags and thats when I found out about the dimples also. I just used my Dremel and a grinding wheel to remove them. That worked, but its pretty hard on the plastic follower it that area, causes scratches on the follower and an occaisonal shell hang in the tube. I went to a stainless steel follower and that cured the problem.
Brownells has a tool for removing the dimples. It's just a solid steel tube that fits down the magazine and pushes the dimples out,but I think it was about $75.00. Kinda spendy if you only using it once or twice.
I finished everything up this afternoon and took some pictures. I ended up using the dremmel, and it took no more than 10 minutes. The nice part about it is that there aren't holes on the top or bottom. The plastic follower still got caught up in that area so I sanded down the edges, and everything works fine now. I can fit 7 shells in without any trouble, but the 8th is really tight. I'm gonna leave it filled with 7 for a while to loosen the spring up. Still haven't fired it in this configuration, but it feels pretty solid in my hands, and the folding stock doesn't look like it will be too harsh on the shoulder. Everything is from Advanced Technologies.
This images are hosted off my personal server, please be patient...
I plan on keeping the 28" barrel, I don't think losing 8" would make a dramatic difference on its handling? I use it the most for clay shooting, so it'll have to suffice for now.
Hello all fellow shotgunworld forum members and visitors hope yall all having a good day and a good night. Hope everone is feeling well and getting along in life good and all that jazz.Anyways thought i would post a reply on here to help out a fellow shotgunworld memeber to help him from messing up his shotgun after he has it fixed up and all that.
Ok now before you go and mess up your shotgun purepremiumpulp do not and I repeat do not try to put 8 rounds into your shotgun extention magazine tube for if it is a standard combat extention that you are using for remington 870 it will only hold either 7 --2 3/4 inch shotgun shells in the magazine tube itself the 8th round is locked and loaded inside your shotguns chamber if you are going to have it fully loaded.
Now if you use 3 inch shells it is 6 -- 3 inch shells in magazine and 1 locked and loaded in chamber for total of 7 with the same magazine tube.Now like a standard 7 round extention for remington 870 would hold 6 shells that would in this case be either 2 3/4 inch or 3 inch shells so 6 in magazine and if you fully load it the 7th round is locked and loaded in the chamber. So i thought I would let you know this before you try to load one to many shells in the thing and then messing up and jamming the hell out of your magazine spring and messing up your combat homdefense modified shotgun and then you would have to buy another spring when it`s not necessary.So I hope this helps you out and hleps you to be able to use and enjoy your shotgun even more .......
Well yall all have a good night and hope yall all have a good day tomorrow catch yall next time.
Thank you OMEGASANDMAN for the warning. I didn't actually put 8 shells in, but I was under the false assumption that I could fit 8 when I bought it. They always advertise 8 instead of 7+1. or 6+1, etc. As far as the rest of the purchase is concerned, lets just say I'm glad that I still have my old stock and forend to switch back to. I only go to the range probably once a month, and I shoot handthrown clay targets the most. I think I'd prefer the regular stock and forend for that task. When I shoot slugs and buckshot though, the extra places to holdon to will be nice. As of now, it'll be stored in the current configuration with both pistol grips, and occasionally switched back when i want the original feel.
ok im thinking of putting a magazine extension on my Model 870 Express Super Magnum Synthetic Turkey
will i have any problems with putting a magazine extension on it? its exactly like the picture ecept that i have a advanced technology pistol grip butt stock on it. I would also like to fit a heat shield on it, but will the ribs on it stop me from being able to put the heat shield on?
I'm not 100% positive on this, but most likely you will have to do the same thing I did -- remove the dimples at the end. Take a look at the end of your mag tube, if there are indentations on the top and bottom then you will have to find a way to remove them or else the brass gets stuck when you try to slide a shell through. If you have a dremmel, its a simple job, and IMO its the better route compared to drilling because you wont have a hole in the top and bottom of the tube.
The heat shield might be a problem because of the ribbed barrel. I have the same barrel and I had to modify the folding stock or else it wouldn't lock shut because the end would come in contact with the rib. Maybe someone else could help you out in more detail... My guess is that it can be done, but you might need to modify it to fit the larger diameter?
So I just got a mag extenison for my rem 870 express and I dremmeld out the dimpples then sanded them down perfectly all the shells fit fine but now when I pull back on the action all they will not load or un load or anything i have to pull off the mag extension any ideas on what is happening.?? thanks in advance
I already did the dremmel way it work out fine very smooth no binding at all. thanks for the info looks like ill be switchin to a police forend could you perhaps tell me what are good forends and what to stay away from.
This is an older thread, you may not receive a response, and could
be reviving an old thread. Please consider creating a new thread.
A forum community dedicated to Shotgun owners and enthusiasts including the Remington, Beretta, and Mossberg shotguns brands. Come join the discussion about optics, hunting, gunsmithing, styles, reviews, accessories, classifieds, and more!