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whitesquirrel44
December 10, 2009, 00:55
I've seen many different variations on the FAL platform, from 9mm to 8mm. Has anyone tried to make an FAL shotgun similar the Saiga? 12 ga may be too wide to fit in a receiver but maybe 20 ga would work. I tried searching but didn't find anything.

[486]
December 10, 2009, 06:21
The bolt face and the size of the hole in the front of the receiver really ain't too suited for a big rimmed case. Maybe a .410, but what good is that?

Deltaten
December 10, 2009, 07:47
With the bolt face ground flush; the only limitation would be the size of the action and bbl threads. Don't believe I've ever seen a shotgun bolt that surrounded the shell base like a rifle bolt does.

20 ga. might be a tight fit; but more'n'likely doable. Don't believe theres a lot of 28 ga around ta play with ;) and making one up in .410 would be a waste for anything but a test-bed project.
Now this would be THE project for a meeper switch-barrel conversion :D .22 thru .30 cal with a shotty bbl as a spare LOL.

Hmm... now ya got me thinkin'..... have an Aluma-bomb around here somewheres....

;)
Paul

richbug
December 10, 2009, 09:02
Originally posted by Deltaten
.

20 ga. might be a tight fit; but more'n'likely doable. Don't believe theres a lot of 28 ga around ta play with ;) and making one up in .410 would be a waste for anything but a test-bed project.
Now this would be THE project for a meeper switch-barrel conversion :D .22 thru .30 cal with a shotty bbl as a spare LOL.

Hmm... now ya got me thinkin'..... have an Aluma-bomb around here somewheres....

;)
Paul

I just took some measurements. a 20 will work in the fal mags with minor modifications. A 12 won't. The receiver rails would need serious mods. Probably have to make a new front for the bolt.

I don't need another gun, but I do have a couple cases of 20 ga shells here, and only a single shot to use them in. I believe if I had an alumibomb, or other disposable receiver here that this would be my next project.

sld
December 10, 2009, 10:20
I like the idea, I even have a spare aluma-bomb. now here to find a barrel, and how am I going to get enough gas to unlock the bolt.

whitesquirrel44
December 10, 2009, 11:57
Oh no, what did I do! I caused alot of people to spend money, like my own little economic stimulas package. Since my job wasn't one "saved" by Obama, maybe I could go to work for the government.

I expect detailed threads with pictures during your projects.

richbug
December 10, 2009, 14:19
Originally posted by sld
Now here to find a barrel, and how am I going to get enough gas to unlock the bolt.

Winchokes would be nice... should be able to pick up a well used barrel on Gunbroker reasonably as a donor.

Big gas port(I'd start at .125" and keep drilling till it runs), if that don't work, you would have to make a bigger diameter tube and piston. Gonna hafta make the gas block anyway. I suspect this is one case where a short gas system would be beneficial.

stimpsonjcat
December 11, 2009, 15:53
I am not reading this thread.

richbug
December 11, 2009, 16:40
Originally posted by stimpsonjcat
I am not reading this thread.

Oh come on. You could show the saiga guys what a shotgun should be.

I'm not going to drop $250 on a receiver just to mill out most of the rails. Well not yet anyway.

stimpsonjcat
December 12, 2009, 22:28
I do not have 30% FAL receiver that would be perfect for this.

And I am still not reading this thread.

Slow
December 12, 2009, 23:02
LOL

believe it or not I have pokedabout the idea with Owlcreekok for several years now about building a .410 FAL

chromestarhustler
December 12, 2009, 23:35
alumabomb recievers should be shipped to me so i can build a 7.62x25

richbug
December 13, 2009, 11:55
Originally posted by stimpsonjcat
I do not have 30% FAL receiver that would be perfect for this.

And I am still not reading this thread.

I don't want to do this either, yet I found myself seeing how many 20 ga shells would fit in a mag. Just FYI, they will take 3" shells with a bit of room to spare.

whitesquirrel44
December 13, 2009, 14:01
Come on stimpsonjcat, it would look real nice next to that 8mm.

stimpsonjcat
December 13, 2009, 22:41
Originally posted by richbug


I don't want to do this either, yet I found myself seeing how many 20 ga shells would fit in a mag. Just FYI, they will take 3" shells with a bit of room to spare.

So how many fit?

OK fine...I'm reading this thread.

richbug
December 14, 2009, 11:33
Originally posted by stimpsonjcat


So how many fit?



7 fit in an Izzy 20

I think 11 would go into a L4A1 mag, but I don't have one here to mess with. Maybe 12 if you made a new follower.

ThunderGod
December 15, 2009, 16:56
Make it a modified blow-back, and save yourself the headaches of a shotgun gas system.

Story
December 23, 2009, 11:45
And then you'd have to build 20 gauge versions of the FRAG-12 -
http://www.army-technology.com/contractor_images/combined-systems/4-frag-12.jpg

http://www.defensereview.com/1_31_2004/FRAG%2012.pdf

Deltaten
December 23, 2009, 18:29
Yessssssss!!!
The "Frag-20".... has a nice ring to it ;) and now that I have a 20 ga loader..a piece of cake! :)

I do wonder 'bout the blow-back" system TG mentions. WTF is a modified blowback?? Either it locks or it don't... is there summat in between???

I played with the idea of a mag-fed shotty back in the days prior to any of the hybrids or factory models of Sweeper, USAS-12 etc. Found that a 20 ga shell would fit a (then expensive) m-14 mag and picked up a Hi Standard built Ted Williams 20 to start off. I lost interest when said TW wouldn't function too well and disassembly was crippled by some stooge fugking with it prior to my acquisition. Still have it tho..... wondering if I could mate a new semi-blowback system to it ;)
I still have the hand formed quasi/ersatz mag somewheres, too :D

Topbanana
December 23, 2009, 18:49
Could a .410 unit do .45LC? Think if it! A big-bore FAL!

Deltaten
December 23, 2009, 20:09
[possibly] Better yet......
45-70 or the semi-rimmed equivalent.. the .450 Marlin???

Prolly work :D

richbug
December 24, 2009, 09:54
Originally posted by ThunderGod
Make it a modified blow-back, and save yourself the headaches of a shotgun gas system.

Would you propose a recoiling barrel? Never seen a true direct blow back recoil operated shotgun that I can think of.

Blow back guns recoil harder, and require a firm shoulder plant to function.

Try to shoot your Auto-5 or 1148 in an awkward position and see how well it functions(under a car, off wrong shoulder around a barricade etc.)


If you want a slick, wicked fast shotgun, it needs to be gas. The gas system can't be too hard to work out.

Anybody got an alumibomb they want to part with cheap(or otherwise wrecked receiver)? I'd even take a stab at WEG's extra special Hesse.

[486]
December 24, 2009, 10:27
Originally posted by Deltaten

I do wonder 'bout the blow-back" system TG mentions. WTF is a modified blowback?? Either it locks or it don't... is there summat in between???

Maybe delayed recoil, something like a heavy carrier, light recoil spring, and block the carrier back a little bit so there isn't any dwell between the carrier moving back and it starting to cam the bolt up. It'd still be fully locked, just the inertia of the carrier would have an easier time unlocking it.

Might blow up from unlocking too early though so I can't really recommend it...

richbug
January 04, 2010, 07:50
Originally posted by stimpsonjcat


So how many fit?

OK fine...I'm reading this thread.

Are you done with it yet? I'd rather copy yours than break ground.

stimpsonjcat
January 04, 2010, 10:46
Originally posted by richbug


Are you done with it yet? I'd rather copy yours than break ground.

LOL! You might want to go check how long the 8mm took to complete!

And where's all my rifle grenade testing data?

owlcreekok
January 04, 2010, 12:13
We think a .410 FAL would be the shiznit. Birdshot, buckshot, .41 cal slugs.

Why, it is just a wonderful idea.

:|

richbug
January 04, 2010, 13:56
Originally posted by stimpsonjcat

And where's all my rifle grenade testing data?

Unfortunately, the white stuff on the ground keeps me from being able to recover them.

I'll find them with the mower in the spring.

richbug
January 04, 2010, 13:58
Originally posted by stimpsonjcat


LOL! You might want to go check how long the 8mm took to complete!



Yeah, I guess I built an 8mm Garand and AK in less time.