MVP switch barrel in Pistol calibre (9mm or 45 acp) using Glock mags

Discussion in 'Modifications' started by aussiemvp, Mar 31, 2017.

  1. aussiemvp New Member

    Member Since:
    Mar 27, 2017
    Message Count:
    6
    Hi

    Am new to the forum, waiting delivery hopefully soon of an MVP in 223. Did hold off decision as I couldnt make up my mind whether 223 or 308 and missed out on a special price offer.

    ( should have bought both !).

    I am a new immigrant to Australia so getting used to the gun laws here. No semi autos, no suppressors ( sigh)

    My interest in MVP's comes from owning a Remington 7615 P, and using the fact it also has a ar15 mag so I can get a switch barrel in 223 and 300BLK using the same mag. There is a great company called Lumely Arms here in Australia that sell a bracket to convert 7615 to switch barrels. so a pump action, modular switchable carbine using easily acessible mags and in available carbines. Takes most ar15 stocks, pistol grips etc where legal.

    I still own a JR carbine in 9mm that I bought before emigrating that someone is still looking after for me.

    I was thinking of also getting a pistol carbine by using a 9mm barrel. Then it dawned on me that all those people in the USA who use ar15's with 9mm uppers with a drop in magwell adapter for the ar15 should work in the MVP. They have solved the problem of how to feed my Remington, and with Glock or other mags!.

    Then I realised I could also have switch barrel, bolt action carbine with the MVP in 223, 300 BLK, and now 9mm using a ar15 magwell adapter. Both Glock and AR15 mags in a bolt action switchable barrel carbine! and a takedown essentially to boot.

    So, anyone tried pistol cartridges in MVP before??

    You could even do 45 acp with the 308 boltface.

    It was this forum that gave me the idea of the switchable barrels..

    Will post this on the mod form but thought I would say Hi with a question. ;)
  2. boostless Active Member

    Member Since:
    May 5, 2014
    Message Count:
    201
    I'm not sure about the "Glock" models but my uzi/colt mag picks up the rounds differently than a 5.56 so that my hinder things a bit. Another thing would be that the AR9's that I've seen are all blow back operated so it goes directly in the chamber from the mag. I would worry about such a small round causing feeding problems jumping the gap of the space for the lugs on the bolt head.

    Is this a just cause or train of thought thing? I think it would be interesting to see but may cause more problems than what it would be worth.
  3. spamassassin Well-Known Member

    Member Since:
    Aug 8, 2014
    Message Count:
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    I run a Swedish Mauser with a .45acp chamber that feeds from 1911 mags. Same basic concept. I have seen 2000fps from 200gn pills. I'm actually working on a 9mm super ultra magnum concept right now. Something close to a .351WSL but with a lot more stomp. Basically a .223 case cut just below the shoulder, inside reamed and stuffed with a stout charge and a 147gn FMJ 9mm bullet. FMJ will expand when driven to those velocities.
  4. aussiemvp New Member

    Member Since:
    Mar 27, 2017
    Message Count:
    6

    More than a "just cause", but clearly a chain of thought. Am keen to try 9 mm as interesting (cheap) round out of a rifle, and performs better than a pistol. Thompson, Uzis, H&K etc all use pistol mags. . Would have preferred 45 acp as it is easily to silence, but cannot do this in Australia yet. Was inspired by the De Lisle carbine ( 45 acp out of an Enfield WW11 era). Not hung up on what mags, Glock or 1911 , as long as it would work, and feed well. The magwell conversions around place the round at the breech so i would assume that even a bolt action would be more reliable than a semi. You may be right, it may cause some problems , but it also might work well. Worth a try though.

    I am not so fussed on the switch barrel, happy to dedicate a rifle to the calibre , but anyway to have the capability to takedown a rifle, only if it is easy, makes travel with a rifle easy, especially internationally for hunting etc.

    It wont stop me buying a rifle, the Magwell blocks can be cheap. I picked it deliberately so that I do not have to change the boltheads ( like 300blk) or anything else. Everything about the installation is reversible, including the barrel removal, so would be worth a try.

    I guess I have always liked to tinker with rifles, but always safely. If it doesnt work, no harm done. I posted here to see if others had tried to learn from them, or anyone had ideas or concerns like yours that may cause problems so I thank you sir.
  5. boostless Active Member

    Member Since:
    May 5, 2014
    Message Count:
    201
    Well if you decide to give it a go, let us know how it goes. I think it would be fun to try but I don't have the funds to try half of the stuff that comes up in my mind.
  6. aussiemvp New Member

    Member Since:
    Mar 27, 2017
    Message Count:
    6

    That sounds really interesting. I bet its fun to shoot. Keeps an old rifle in use but with commercially available ammo. Your new concept is clever, uses the same bolt face etc. I like that. A 450 bushmaster is kind of the same thing but with a 308 cartridge / bolt face, but fits in a AR15 mag. If the 308 bolt in the MVP fitted the 223 action it would simply be a rebarrel to chamber that in the MVP! That is what the Ruger american has done in their ranch rifle in 450 Bushmaster.

    I like those KISS principle ( keep it simple) wildcats where you cut a rifle cartridge off at the shoulder. There are a few around, all cool. Military surplus is cheap and generally safe, as it is built to take rifle pressures.

    For my sins, I got a (cheap but quality) WSM action ( 7mm or 300 wsm from memory) and converted it to a " .50 Hush Puppy".

    It was a WSM case cut off at the shoulder and takes .510 projectiles subsonic though. No bolt change, just a cut down 510 barrel. Put a huge silencer on it. Unfortunately had to leave it behind when I emigrated. Hardly a pistol cartridge. Having said that, you can put a 50 S&W in a Mosin Nagant as it apparently fits the (7.62 x 54R) bolt face, but I digress.

    I did buy an enfield in the past , removed the barrel and started making a De lisle copy out of it , but had to abandon it to move countries. There are a couple of places that make 45 acp kits for military rifles, Enfield and Mauser, Rhineland arms etc, they make good stuff by the looks of it , and seems to be reliable, and feeds well. Again its tricky to import some of that stuff legally between countries so I have to try what I can with whats available here.

    The inspiration for me is the Spanish destroyer, takes pistol 9mm mags ( not 9mm x 19), bolt action, mini mauser. They were surplus and cheap in the states, but rare here in Australia as far as i can tell.

    I just want a modern version of a simple carbine , that shoots (cheaper) pistol calibres, and mags / ammo can ( theoretically) interchange with a sidearm. . I have never been into pistols ( too hard to own legally in Australasia)
  7. aussiemvp New Member

    Member Since:
    Mar 27, 2017
    Message Count:
    6

    I will post anything I do as I know how much it helps me when other people do.

    I think we all have the same affliction where we cannot afford all the things we would WANT to do.

    I try and keep it cheap, buy stuff on special, and select projects that need the least amount of gunsmiithing. . My best economy was using the spare 223 barrel from a 300BLK conversion and attached it to a 22wmr action so I had a fast twist rimfire barrel, so i could try heavy 223 subsonic projectiles in 22WMR by pulling the bullets. Like the Aguila SSS but in 22wmr. I love to recycle. Lots of fun too.
  8. spamassassin Well-Known Member

    Member Since:
    Aug 8, 2014
    Message Count:
    1,038
    It's a hoot for sure. Anything within about 300 yards is in trouble but it's really at home from conversational distance to about 150m. I have a whole range of spec ammo for it including a wildcat of my own, .45 Cinderblock (those in US zip code "foreign" might call it .45 Breezeblock), which is basically .460 rowland brass cut to .888" and stuffed with 55K psi worth of Hodgdon Longshot powder. There are a few levels under that from light .45acp spec to .45super and .460 rowland spec. The Cinderblock loads are far above the Rowland spec loads and 10,000% not pistol safe but work brilliantly in a bolt action rifle. I built one for my spotter as well on a spanish mauser action. Rhineland is actually bringing out a .450 bushmaster and a 7.62x39/6.5 Grendel kit for large and small ring mausers. http://troupsystems.com/mauser45kits.htm As soon as the Bushmaster kits are available I'll be picking one of each up.

    Thankfully for me I have to hire for a bunch of positions at my company that aren't in my chain of command and which I'll fill with people I know. I need people I know so the communication is there so they can train up in a couple days and then hit the ground running instead of the usual year of training before someone gets fully productive. Since I'm referring them all I get all the referral bonuses. I've already got 3 guys hired in and have 3 more to do in the next month. Looks like it's going to be a fun year. Those referral bonuses can be a couple grand for high level peeps.

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