which 9mm?

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justin22885

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im looking to get an old sub gun parts kit, or piece together components to build a sub-gun based carbine/rifle to replace my 45acp carbine as i have switched off of 45acp as my pistol caliber of choice

im wanding something with more of a military history to it, no sub2k or hi points, but something more like the sten/sterling, MP40, VZ24/26, suomi M31, MP5, etc.. it wont be just a range toy or a collector piece, but it will be my primary firearm for 90% of the situations that call for a firearm.. so, suggestions?
 
yeah, the MP5 and the sterling get the nod for having the best mags.. double-feed and fully curved to match the 9mm taper, but it seems to be the roller-delayed system of the MP5 is simply unecessary and adds more moving parts and complexity to a firearm that doesnt need it, straight blowbacks are adequate for 9 mil
 
ive considered the uzi, its much heavier than the MP5 though and i think the MP5 mags are better, so i think even though the roller delay system isnt necessary (just one more thing to have to repair or maintain) i do think it remains a front runner over the uzi
 
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Your way overthinking the complexity of the roller delayed blowback system, it works, and the maintenance involved, its minimal.

t wont be just a range toy or a collector piece, but it will be my primary firearm for 90% of the situations that call for a firearm..

The MP5 is by far the best choice you listed, and maybe the sten/sterling.
 
im familiar with the roller system inside and out, owned HK rifles for a while and theyre still one of my favorite types of rifles.. just seems like overkill on the MP5 though, you know, like the "blish lock" system on early thompsons
 
but it seems to be the roller-delayed system of the MP5 is simply unecessary and adds more moving parts and complexity to a firearm that doesnt need it,
Have you considered the delayed roller-locked MP-5 is so much lighter and more controllable then anything else because it doesn't require either a heavy chunk of steel for a bolt to keep it shut?

Or, that it fires from a closed bolt, so it can be fired much more accurately then a slam banger open bolt gun flies foreward when you release the trigger??

rc
 
just seems like overkill on the MP5 though

Maybe so, I'm no expert on the MP5, but Hk introduced the UMP(straight blowback) to replace them, yet there's still a demand out there for the MP5, and I don't think its purely out of nostalgia.

But regardless, you know where my vote stands...
 
well, i think i could narrow it down to the MP5 and sterling at least, problem with the MP40, suomi, and sten is theyre not dimensionally efficient, the magazine and thus the chamber is so far forward that the overall length of the rifle is excessively long for the barrel length, this isnt the case with the sterling or the MP5, and they both weigh a heck of a lot less by 2-3 pounds

if i were to build a sterling from a parts it which means having to build a semi-auto receiver from a tube, is there any reason why i shouldnt cut out mlok or keymod slots rather than the standard vent holes in the forearm portion?
 
Have you considered the delayed roller-locked MP-5 is so much lighter and more controllable then anything else because it doesn't require either a heavy chunk of steel for a bolt to keep it shut?

Or, that it fires from a closed bolt, so it can be fired much more accurately then a slam banger open bolt gun flies foreward when you release the trigger??

rc
the open vs close argument is true if were talking full auto variants, none of the civilian versions are open bolt, also the sterling and MP5 are both right around 6lbs with sterling kits being $350, an MP5 build will likely cost much more with no advantage
 
anyone with any experience with the czech VZ26? it has some potential and parts kits are around $100
 
Do you mean vz.26 - light machinegun?
I suppose you mean submachine gun vz.48 Sa 23/24/25/26
I have only experience with 7,62x25mm version both full- and semi- auto.
Its fun gun, but dont expect great accuracy or ergonomy - its comparable plinker to semi-auto UZI.
 
I went with the Steyr AUG 9mmP conversion, but I already had an AUG.

If I didn't have one, I'd be all over a Tavor 9mmP. The Tavor has the advantage of being totally convertible for lefties, which the AUG doesn't. Tavor 9mmP mags are cheaper too.

9MMA3_zps4l5jwotj.jpg

BSW
 
Suomi;
-Very high quality; gun is heavy but you'll cry when you see how well made everything is compared to even an HK. The giant tube receiver was machined from a solid forging.
-Very well-trod ground; both striker and hammer conversions are well established and successful, and even have ATF approvals to follow
-Very good condition; many of these were in unissued condition
-Very good magazines; the sticks are probably the best straight-style ever made, the drums ARE the best ever made. Coffins are pretty good, too.
-Excellent support; almost as many build threads/guides out there as for ARs
-Excellent aftermarket; I think TNW is still making semi reciever tubes, but there are many folks making tube components weldable into a converted semi-auto scheme. There are also folks doing bolt conversions. Don't expect any of this stuff to be as professional/slick as for ARs, since it is still a niche market run almost entirely by hobbyists, but the resources are out there
-Extremely cheap parts kits; they were given away for free as a gift-with-purchase in the late '90s, but now that people know they can be built they run about 150$ for a full matching kit w/ mag(s)
-Extremely cool history; not even the BAR can be said to have single-handedly held off a Soviet trench-charge. Individual sub-gunners w/ mag-loader helpers cut down whole advancement moves on multiple occasions during the Winter War
-Extremely easy builds; with a tube, it's an afternoon with a MIG once the bolt is converted. Said conversion consists of a milled slot for an AR hammer. Without a tube, it's two afternoons MIG'ing the slant-cut remnants back together & burning in a blocking bar
-922r is easy; I believe this gun has so few 922r parts, being a blowback, that it does not apply after the FCG conversion
-Extremely good barrels; I can't recall if chrome-lined, but fairly heavy and great-quality rifling means they are quite accurate. One of the few parts kits remaining which come with barrels (t'anks dubya)

"anyone with any experience with the czech VZ26? it has some potential and parts kits are around $100"
Very good and clever guns, I'd stack one against an Uzi any day. However, the semi-conversion requires the ability to drill a very long, very skinny hole for the striker rod; typically is done with a lathe. Aftermarket support is not quite as good, but the prices can't be beat (which is how it goes with parts kits; they are cheap until someone learns how to build them, starts making conversion parts, and makes the build easy enough for everyone to start throwing up money for kits which increases the price)

"well, i think i could narrow it down to the MP5 and sterling at least, problem with the MP40, suomi, and sten is theyre not dimensionally efficient, the magazine and thus the chamber is so far forward that the overall length of the rifle is excessively long for the barrel length, this isnt the case with the sterling or the MP5, and they both weigh a heck of a lot less by 2-3 pounds"
With the exception of the STEN, Suomi, and (possibly, there's none right now) Sterling, those are also gonna run about a grand just for the no-barrel parts kit. MP5 stuff has been stupid-expensive for like a decade, now, the only 'decent' deal being the repro telescoping stocks HKParts had for 180$ recently (and those stocks suck at anything but looking cool :p). Better bet would be buying an HK33 kit, MP5 reciever flat, an MP5 barrel (unfluted for even cheaper build since 9mm doesn't need it), and an MP5 locking piece, then playing with the springs/wedge until it runs on pistol ammo.

HK guns are also among the more advanced builds to cut your teeth on, also (not at all like an AK due to the amount of precision involved in getting the rails correct & the trunnion straight)

"Have you considered the delayed roller-locked MP-5 is so much lighter and more controllable then anything else because it doesn't require either a heavy chunk of steel for a bolt to keep it shut?

Or, that it fires from a closed bolt, so it can be fired much more accurately then a slam banger open bolt gun flies foreward when you release the trigger??"
All these guns will be firing closed both if Justin is to every actually build them, so no advantage there. The AR-conversion Suomi will likely have a better trigger than most SMGs, though (and tons better than any striker-conversion Uzi or similar, and probably more reliable). MP5's not all that light, btw; that trigger housing, cocking tube/handle, and most of the stock designs truly are needlessly heavy --but that's a good thing when talking full auto SMGs! Its compact size is much more important, and the main effect of the rollers is to allow for smooth shooting with a much heavier(longer) bolt and receiver, as did the earlier non-telescoped SMG open-bolts.

TCB
 
"Do you mean vz.26 - light machinegun?
I suppose you mean submachine gun vz.48 Sa 23/24/25/26 "
Don't take it personally, but we Americans never did figure out how the Czech naming system worked. And it didn't help that the importers procured stuff with 'VZ" (the year) being the only identifier (and I think a lot of the guns themselves didn't have the model on them, either). So we have made up stuff like CZ52 handguns, and VZ52 rifles. But also UK59 LMGs, and CZ26 in both SMG and LMG form. Then you have ZB37. I have learned that everything but 'VZ' corresponds to weapon type (pistol, rifle, SMG, LMG, HMG) but the marketeers in this country don't seem to consistently refer to their wares by anything but the model year.

FWIW, the 'Suomi' supposedly just means 'Finnish', and the proper model is KP31. Which reminds me, the KP44/PPS43 are also excellent alternatives to the M31/KP31, being a bit lighter/smaller, and much simpler to produce. Conversions are a striker-only affair though, I'm afraid, plus the ugliness factor

TCB
 
AUG and Tavor are OK, but I'm not into SMG's.
If you're all about SMG's, well and good, pay the tax and good shooting.
There is also a certain "tag" that might follow you.
Beware!

Otherwise, I'll take the Hi-Point carbine.
 
hmm, i wonder, can the KP31s weight be reduced at all? thinner stronger tube or shroud maybe? perhaps a lighter stock? any way to get it down closer to 8lbs?.. and looking at it closer it looks like the finnish just copied the thompson except put it in a round tube, the bolt with its long forward protruding section to eliminate the need to machine clearance for the magazine on the bolt, the section of receiver around the magazine well, the magazine well itself, its all thompson
 
most of these SMGs have cylindrical bolts that ride inside pieces of steel tubing with minor differences between them.. to build a legal SA version the trigger groups typically have to be replaced anyway which usually requires a custom trigger housing and work on the bolt

so why dont i just choose a bolt from one of these sub-guns, get a tube for it, spot weld on the magazine well of my choice, then fab up a trigger housing or wooden stock to house an MP5 trigger pack?.. end result would look like a bottom feeding MP18 or perhaps some sort of cross between an MP5 and a tech 9.. and i can easily modernize it by putting a top rail on it instead of sights and mlok or keymod slots in the receiver extension/shroud rather than standard vent holes
 
Sounds kinda like what I'm doing for my 9mm.

Flat Spot AR weldable AR lower, Flat Spot weldable Uzi Magwell. The rest of it will be pretty standard AR stuff (AR trigger group, 9mm AR bolt, barrel, etc.).

I know you're not an AR guy, just saying that access to a lathe, mill, and welder, a lot can be done with a little ingenuity and some off the shelf components that are readily available.

One of these days, I want to try my hand at a Southpaw Sterling.
 
so what mags and magazine well would be the best? MP5, KP31, uzi, sten, sterling? how much more reliable are the curved sterling and mp5 mags? my preference would be for a double-feed bolt which would limit me to the sterling, SA24/26, KP44, and maybe the KP31 bolt
 
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