Turning an 870 Wingmaster hunting version into a HD weapon

cmshoot

Senior Member
Project I’m working on for a student. She’s worried about a violent ex-husband and decided to arm herself and receive training. She wants training in both shotgun and handgun. After talking to her for a bit, we decided to start with shotgun. Her budget is about $300 for a scattergun.

Picked up a 1970’s era Wingmaster with walnut furniture and a 26” plain barrel with bead. Thought it would make an interesting write-up and progression, along with general information to help anyone thinking of doing the same. The shotgun cost $275, but I am selling the walnut furniture to make a little money to put back into the gun.

First, I wanted to talk about some of the pertinent differences between the Express, Wingmaster, and Police models of the Remington 870. I am not covering all of the differences, just the ones that I feel are important.

In general, the difference between a Wingmaster and the Police are:
-Wingmaster is high luster blue, while a Police is parkerized
-fancier wood on a Wingmaster, and the longer forend will not accommodate many “sidesaddle” shell holders or police in-car locking racks
-Police model has heavier magazine tube and carrier latch springs to ensure reliability with heavier loads. Most Wingmasters are used with birdshot while Police models are used with slugs and buckshot.
-Heavier sear spring on the Police model
-Wingmaster bolts are hard chromed

The differences between the Express and the Wingmaster/Police:
-Express has a bead blast blue finish
-Express models used a MIM extractor, the W/P models use a machined steel extractor
-W/P models have a vibrahoned finish on the inside of the receiver to smooth out burrs and the like
-Express models use a synthetic trigger housing while the W/P models use metal
-W/P models use the older ball detent system to hold the magazine cap in place, while the Express uses a cheaper, synthetic ratchet insert.
-Express model will not allow for the installation of a magazine extension tube without physical modification of the existing magazine tube.

I wanted to try and keep this particular shotgun as short and light as I could, without going the SBS route. I didn’t have a spare 18.5” barrel handy, and a quick check around didn’t locate one for a decent price. I cut the original barrel back to 18.5” by hand, squared it off, and cleaned it up with increasingly finer files, followed by stones, and finished with emery. Then I used Brownell’s Oxpho-Blue to reblue the end of the barrel. All that is purely my labor, which is free in this case.

For a sight, I thought I’d try something a little different on this one. Also, the student has a budget and I couldn’t go hog wild on this. I ordered a TruGlo Glo Dot II Universal. I’ve read good reviews, and I intend on using a 2-part epoxy to keep it in place. The TruGlo front sight was less than $22. If it doesn’t work, we’re not out much, and I’ll go with a different, tried and true setup.

I wanted to shorten up the length of pull greatly, while making the shotgun lighter and easier to handle. I ordered a set of Hogue furniture; an overmolded stock with short, 12” length of pull, and an overmolded forend that matches a Police model in length. I’ve used this setup for years and like it a lot. The pebbled rubber gives great purchase and they’re very durable. I’m 6’ and I even prefer the shorter length of pull. Most shotgun stocks are made with bird hunting in mind and are overly long for a fightin’ gun. Total is $78.76.

Picked up a Scattergun Tech 2-shot magazine extension with spring and follower from the same gent I bought the 870 from. Cost was $45, which is a steal for that particular item.

A new sear and carrier latch springs are roughly $12 total. FYI, the heavier carrier latch spring is the same one that is used in the Remington 1100/11-87. It is part number F16966.

In the mid-1980’s Remington made a modification to the lifter called the Flexi-Tab. In a nutshell, it solved a rare type of “jam” that could happen that was exceedingly difficult to clear. The Flexi-Tab solves the problem nicely. Since this particular 870 is older than that, it has a chromed lifter with no Flexi-Tab. I just happen to have a newer Flexi-Tab lifter in the parts bin I am donating to the project at no cost. Because I don’t like not having one in my parts bin, I order another for $23.75.

I will also be donating an Esstac shell card (sidesaddle) to the project.

Total, I should have about $410 in assembling this 870, before I subtract whatever money I get from selling the original furniture. All in all, it should end up right around $300, and the result will be a shotgun that I would depend my life on any day.

Semper Fi!
 

cmshoot

Senior Member
Barrel after cutting, squaring off, cleaning up, and rebluing. Sorry for the substandard iPhone pic.
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cmshoot

Senior Member
Never know what you’ll find. The end of the magazine tube was bent a tad. This isn’t a problem unless you’re adding a magazine extension. It’s possible that this could have caused an area where shells would hang up. I bashed it back to round and she’s good to go now.

Using 0000 steel wool and oil, I cleaned and polished the inside of the magazine tube and forend tube assembly. These are common areas for rust.
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JeffinPTC

Senior Member
Nice work!
I've got a 1952 Wingmaster with the round fore end and a 26" Skeet barrel I bought for clays to replace the 28" mod. It sits in my closet with 4+1 of 00. Last spring I got an urge for an 18" barrel and a longer mag. In the end I kicked that can down the road since the cost of a barrel and mag got near the cost of a complete Express. Thanks for explaining the upgrades.
 

bullgator

Senior Member
Good read....thanks.
 

Gator89

Senior Member
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I bought a Mossberg brand (made in Turkey)18.5 inch barrel with a screw in breecher choke plus a tube extension for my 870, keeping the wood furniture.
 
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1eyefishing

...just joking, seriously.
Informative walk- thru, @cmshoot...
Question: I have a 20 gauge youth model 870 that my wife can handle. It sits around the house loaded with number one buck. I'd like to be able to transform it in the same manner that you have shown here. Are the parts available? Can it be done? Most interested in the additional capacity.
 

Rabun

Senior Member
Informative walk- thru, @cmshoot...
Question: I have a 20 gauge youth model 870 that my wife can handle. It sits around the house loaded with number one buck. I'd like to be able to transform it in the same manner that you have shown here. Are the parts available? Can it be done? Most interested in the additional capacity.


You bet they are...kicklite collapsible stock w shell carrier, extended mag tube holds six, williams fiber optic sites mounted to rail. It's a BA weapon
870 youth.JPG
 

rayjay

Senior Member
I like the pistol grip buttstocks because you can tuck the buttstock under your armpit and support the gun ready to shoot with only the right hand if you need to use the left hand for something.

On a well worn 870 the shell stops [ correct nomenclature iirc ] may need attention when you add a mag extension and stiffer mag spring. The worn shell stops can function perfectly with 2 rounds in the mag but a stiffer mag spring and more shells [ weight ] in the magazine may cause the shell to jump the stop resulting in a difficult to clear jam. Difficult meaning pulling the trigger group so this is definitely something to check out. On all out 870s they mill a slot down the middle of the shell lifter so you can use a house key, etc , to push the errant shell back into the mag.

ETA, I'm glad the op is doing this and REAL glad the lady is being proactive about protecting herself from a macho man.
 

Rabun

Senior Member
Existing tube...take tube cap off, take spring retainer out, replace existing spring with new one that came with the extension, attach tube support to extended tube and barrel which also came with the extension tube. Tube support has a sling attachment as does the stock. Was very easy. The stock needed some minor filing to fit "properly". I used the original forearm. I haven't run a bunch of rounds through it but plenty enough to sight in 3" rifled slugs and 2 3/4" #3 buck. I've also shot some non-lethal rounds through it just to see what they would do...which was not much. Slugs are sighted in at 25 yds and are plenty accurate at that distance. Was a fun little project. I don't have the expertise and knowledge a lot of folks on this forum do...especially CMshoot. As mentioned above there are probably components that could be upgraded, but that is beyond me and given the small amount of rounds i will run through this thing, I feel comfortable with it's reliability.
 

Rabun

Senior Member
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I also got one of these slings that hold 25 rounds. it's heavy as heck loaded with rounds and makes the gun unwieldy when attached but keeps plenty of ammo handy for a grab and go scenario. I don't keep that sling attached to the weapon and installed a clip adapter so I can wear it around my waist or as a bandoleer or as a sling if wanted.
 
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