mesinge2
Member
Would we be able to send the rifle to you to do the work?
Have the barrel cut and re-crowned, extra
I know that that would cost more...
Have the barrel cut and re-crowned, extra
I know that that would cost more...
Modular Chassis System for Mosin Nagant
- Thread starter Rafaga
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writerinmo
Member
As a Mosin shooter, all I can say is this is awesome. Simple and it works. Powdercoat it all matte black and shoot the hell out of it, what's to not like? As to those who want to complain about taking a $75.00 rifle and adding major dollars to it when you can buy new rifles for lots less... sorry guys, but you are knocking one of the parts of owning firearms that has been around forever, and always will be, and that's the owners right and options to dress it up however they want or like to. The fact is, the Mosin is a very simple machine that works, and works well, so why not? The only reason that Mosin's are cheap as they are is the fact that like 30 million of them were made. If only 3 or 4 thousand were made and they were selling for $1000 would that make them better? Yeah, right...
dirtyjim
Member
Rafaga,
i can pm you some sketches of the q/c barrel system i have in mind. its actually only two parts, three including the barrel & very simple to make.
basically all it would be is a threaded sleeve that would screw into the mosin action in place of the barrel. the od of the sleeve would threaded for the mosin action on one end then step out to around 1.250"o.d. x around .750 long on the other end and be thread 10 or 12tpi. the i.d. of the sleeve would be around .790".
the face of the sleeve would have a hardened pin sticking out about .125" to serve as a locating pin to keep the extractor cut lined up.
the barrel shank would be machined almost the same as an ar-15 barrel shank but it would have a .125" section milled out of the ring to match up with the pin on the face of the sleeve. the barrel shank would have a very colse slip fit into the sleeve.
then just machine a barrel nut to hold the barrel on and your in business.
to swap barrels or just make it into a shorter package for travel all you would do is unscrew the barrel nut & slide out the barrel.
i can pm you some sketches of the q/c barrel system i have in mind. its actually only two parts, three including the barrel & very simple to make.
basically all it would be is a threaded sleeve that would screw into the mosin action in place of the barrel. the od of the sleeve would threaded for the mosin action on one end then step out to around 1.250"o.d. x around .750 long on the other end and be thread 10 or 12tpi. the i.d. of the sleeve would be around .790".
the face of the sleeve would have a hardened pin sticking out about .125" to serve as a locating pin to keep the extractor cut lined up.
the barrel shank would be machined almost the same as an ar-15 barrel shank but it would have a .125" section milled out of the ring to match up with the pin on the face of the sleeve. the barrel shank would have a very colse slip fit into the sleeve.
then just machine a barrel nut to hold the barrel on and your in business.
to swap barrels or just make it into a shorter package for travel all you would do is unscrew the barrel nut & slide out the barrel.
desidog
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Rafaga, Nice work on the CNC; that looks like a lot of time and effort went into your project. In order to make it more cost and labor-effective to produce, i'd try to minimize the edges. In other words, simplify it for mass production.
Also, I like your rationale in post #25.
Good luck with the project. I hope it shoots well.
Also, I like your rationale in post #25.
Good luck with the project. I hope it shoots well.
Andrew Wyatt
Member
I'd like to see a garand chassis. that would be great.
Thanks, but I'm not really in the gunsmithing biz. I'm set up for the CNC machining but not processing individual builds like that.
That's a pretty cool idea. In this case you would have to disassemble the chassis to get to the q/c nut but, it could work.
ScratchnDent
Member
I like it!
Now I'm dreaming of a 6.5x54r wildcat...
Now I'm dreaming of a 6.5x54r wildcat...
Given the zillions of Mosins out there, I would bet you could sell a few of these at a reasonable price point ($300 certainly seems reasonable). Just look at all the aftermarket goodies people bought for $200 SKS and $400 AKs.
And the Finns were still using modified Mosin for target/sniper rifles until fairly recently, IIRC.
The MS is not my cup of tea, but there are lots of people who think otherwise.
Stick with a stud type Harris bipod system. There are adapters for Parker Hale, and the reality is how many of the latter do you see. I go to a lot of tactical matches and see Harris bipods on AI rifles.
AK grip seems like a good solution given the limitations. There are lots of AK aftermarket grips. If the AR grip interface won't work, toss it.
One nice things about your project - there are no rivals. You'd have the market to yourself.
And the Finns were still using modified Mosin for target/sniper rifles until fairly recently, IIRC.
The MS is not my cup of tea, but there are lots of people who think otherwise.
Stick with a stud type Harris bipod system. There are adapters for Parker Hale, and the reality is how many of the latter do you see. I go to a lot of tactical matches and see Harris bipods on AI rifles.
AK grip seems like a good solution given the limitations. There are lots of AK aftermarket grips. If the AR grip interface won't work, toss it.
One nice things about your project - there are no rivals. You'd have the market to yourself.
dirtyjim
Member
its actually very similar to the q/c barrel system used on the windrunner.
to use it on your chassis system it you would need to mill a slot into side of the chassis for a spanner wrench to fit though. without the chassis you would just have a large knurled nut.
what i think would be real neat would be a chassis system that incorporates a barrel block mounting stystem & free floats the receiver. the bottom of the chassis would line up on the recoil lug then the top of the barrel block would bolt on locking the barreled action in place.
dirtyjim
Member
the chassis could accommodate both very easily. just drill & tap a hole in the front of the chassis & make a PH style spud that threads into it.
i have harris, parker have & versipod bipods. IMHO parker hale bipods are the best there is,versipod is a cheaper PH knockoff but still miles ahead of a harris.
my harris bipod is sitting in the corner collecting dust & i'll probably give it to one of my nephews as i don't plan on ever using it again.
millertyme
Member
You'd probably ought to patent that before someone in China sees it. I'm sure they could mass produce a million castings or forgings that would need minimal finishing and turn a pretty decent profit on it, especially since they can get away with paying $10/day for their labor.
FWIW, I think it's pretty awesome. For the right price I'd buy an MN just to get one of those for it. Since it's modular, have you come up with any other configurations?
FWIW, I think it's pretty awesome. For the right price I'd buy an MN just to get one of those for it. Since it's modular, have you come up with any other configurations?
Russ Jackson
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I am in for one. I bet you could sell 20 or so here at 250 each. Word of mouth might get you a new side job or new job. This is how these things start...Russ
cleardiddion
Member
Neat project, I have to admit.
But, I'm kinda a wood and blue guy so when I first saw this I was...I dunno, mortified is the best word I can think of.
Not my thing, but I guess everyone has their own tastes.
Good work.
But, I'm kinda a wood and blue guy so when I first saw this I was...I dunno, mortified is the best word I can think of.
Not my thing, but I guess everyone has their own tastes.
Good work.
alemonkey
Member
Given an affordable price ($250 or so) I would be interested.
Hizzie
Member
Very cool. Too bad I don't have room in the safe for another "fun" rifle.
PH bipods have the stud on the bipod. Versapods require a stud on the stock. Unless things have changed since I bought my AICS with PH bipod. So you need to pick one or the other.
The AICS and AI rifles have a PH hole in the front of the stock to accommodate the PH bipod as well a forward swivel for the Harris.
The nice thing about the Harris is that you can tilt and lock the bipod, unlike the PH.
The AICS and AI rifles have a PH hole in the front of the stock to accommodate the PH bipod as well a forward swivel for the Harris.
The nice thing about the Harris is that you can tilt and lock the bipod, unlike the PH.
Cosmoline
Member
Interesting effort, though I'm sticking with my M39.
You should check out what Valmet did in creating the Tkiv 85 with old Mosin receivers. As the Finns discovered long ago, the key to remaking the Mosin-Nagant in to a precision rifle is the BARREL. Without putting a custom heavy barrel on, you are going to be stuck with the very thin Soviet design that whips around like an AK barrel. I've seen accuracy with such thin barrels *decrease* once the pressure of the wood stock was removed, so free floating may not be the best idea.
http://en.wikipedia.org/wiki/7.62_Tkiv_85
It looks like you cut the bolt handle as well.
Does the safety function with your receiver?
Have you done any torture-testing to see how these hold up under sustained 54R recoil--esp. out of your light-weight platform?
You should check out what Valmet did in creating the Tkiv 85 with old Mosin receivers. As the Finns discovered long ago, the key to remaking the Mosin-Nagant in to a precision rifle is the BARREL. Without putting a custom heavy barrel on, you are going to be stuck with the very thin Soviet design that whips around like an AK barrel. I've seen accuracy with such thin barrels *decrease* once the pressure of the wood stock was removed, so free floating may not be the best idea.
http://en.wikipedia.org/wiki/7.62_Tkiv_85
It looks like you cut the bolt handle as well.
Does the safety function with your receiver?
Have you done any torture-testing to see how these hold up under sustained 54R recoil--esp. out of your light-weight platform?
dirtyjim
Member
the original style parker hale bipod has the spud on the mount like the versapod, the parker hale fixed spigot bipod has the spud on the bipod.
the versapod is a copy of the orignal style parker hale bipod & both style of parker hale bipods are still availible but at an average price of $300 they aint cheap
Vyacheslav
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if a shorty s12 can do full drum dumps of slugs with a cheap tapco AR stock im sure the mosin will be fine
Carl N. Brown
Member
In the science-fiction TV series Firefly they mentioned a "54R" sniper rifle.
The bolt handle was fairly easy although I do want to make a new one from scratch. What I did is cut 1/2 way down through the shaft and then heat and bend. Still needs to be welded but, I may not bother since it will be replaced fairly soon.
The safety does work. The ID of the cover is just large enough to clear.
While I have thrown a bunch of lead down range I don't know what you would consider torture testing. Certainly no freezing temperature tests or salt baths etc.. I do plan on taking some precision shooting courses with it in the future, will that count? Being that it's all metal and bolted together in numerous places it is kinda overkill compared to the original wood stock and is very, very rigid. There would be no problem placing a support under either end of the chassis and standing on the middle.
The weight of the rifle with a 20" barrel, no scope, or bipod is about 8-1/2 to 9 Lbs. so it's very close to original weight.
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