Armat M41A Pulse Rifle

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Glutton for punishment

I have to give it to him, though its pure gluttony to go to all that trouble, GunSx has a cool idea. Maybe I shouldn't be encouraging him, but shoot, let the guy make a sweet gun. If I had a couple grand laying around I can think of worse ideas I would spend it on. I love the idea of the counter, Owen might have something there.

By the way, would it be that hard to start with all parts non-NFA (longer barrels, stock) and put it together, move your barrel ring, etc., then when you are good and ready file the papers and chop the barrels? Oh, and I don't know the specs on a Thompson, but it is all that hard to drop an auto sear into a semi? Again more NFA, but a whole heck of a lot cheaper then buying an auto version.
 
Another suggestion for increasing the mag on the shotty: move the silly thing back a bit! If the ejection port is right over the trigger (which would make things WORLDS easier), you'ld get a bit more length. Might only be one more shell, but I think it's be worth it...

You might also want to get REALLY buddy-buddy with your local Sherrif, so he'll sign off on the Form 4...
 
i have been envisioning a similar project
but with a paintball marker

a Qloader will occupy the shotgun space
and a 3.5 oz HPA tank will live in the mag well

The best start point is:

http://www.m41a.com/

:: What's this site about, anyway?


It is the purpose of this site to offer information and links for those individuals interested in building and learning more about one of the most beautiful weapons in the science fiction genre. Yes, I am referring to the pulse rifle as seen in ALIENS. This also happens to be my favorite prop.

A few years ago, I had a vision of what this site needs to be. Time and interest fizzled out and it wasn't until a recent computer crash, losing many valuable links in the process, that sparked a new flame into realizing this vision. Within this site, you will soon find and array of pictures, information, and links dealing with the topics listed on the left. Please keep in mind, this site offers keen interest to the pulse rifle but, if there is something really cool or falls in line with a tangent interest, you will find it here too.

Please excuse the mess while we make this happen. For those of you that have been familiar with the old site, it is still available in its entirety and may be found here. tommin's studios 2004 If you would like to contribute a Pulse Rifle related article, tutorial, or know of a Pulse Rifle related site not listed here please do let me know. My contact info is available at the top right of this page.

A special thank you to all that have given some input to the site so far. The kind feedback has been an unexpected surprise and so inspirational that I had to make some of it available on this site. Click [ HERE ] to view the readers' feedback and shoutbox.

Many thanks,
Tom
Team m41a
Click to expand...
 
Hunter Rose said:
Another suggestion for increasing the mag on the shotty: move the silly thing back a bit! If the ejection port is right over the trigger (which would make things WORLDS easier), you'ld get a bit more length. Might only be one more shell, but I think it's be worth it...
Click to expand...

I'm not sure I understand what you mean. The back-end of the 870's receiver is pretty much almost butted up against the magazine (excepting any kind of attachment method that uses a screw into the stock-screw-hole on the 870)



Gauido said:
By the way, would it be that hard to start with all parts non-NFA (longer barrels, stock) and put it together, move your barrel ring, etc., then when you are good and ready file the papers and chop the barrels?
Click to expand...

Good point. I actually became a touch more interested in the Serbu "SUPER SHORTY", and I sent an email to their head honcho about maybe getting just a barrel/mag-tube assembly, but he never emailed me back. It seems like the super-shorty would be ideal for the M41 concept, so long as I could get it transferred as a SBS, instead of an AOW (or, better yet, just get the barrel/magtube assembly, and turn my maverick into a.. *cough* "30mm over-and-under, pump-action grenade launcher" *cough* Indeed.

Oh, and I don't know the specs on a Thompson, but it is all that hard to drop an auto sear into a semi? Again more NFA, but a whole heck of a lot cheaper then buying an auto version.
Click to expand...

I don't intend to spend 2-5 grand on a sear, nor do I intend to purchase a 20,000 dollar Thompson SMG. A 730 dollar Auto Ordnance Thompson will do just fine, thanks :D

*bounce* Now I just need to do some more research on attachment systems, recoil, various materials and methods for designing the parts I need/want, and then wait three years until I'm old enough to transfer an SBS/SBR/AOW/any NFA weapon!

~GnSx
"I am a banana!"
 
20 rounds of .45 and, what, 3-4 rounds of .12 ga? .20 ga?
In one rifle package?
Sounds like the perfect HD weapon.
No wonder the marines liked it so much.
 
Doesn't work as well with no ammunition in it.

"Incinerators only!"
...
"What're we supposed to use, man, harsh language?"

Additionally, does anyone have a source for reasonably priced 20-round Thompson mags that'll work in the semiautos? Thanks.

~GnSx
 
For your plastic clamshells, definately look into stereo lithography. It's a rapid prototyping process. All you do is supply a 3D model to the vendor. If you are careful about filling your parts with voids to decrease the costs (material is sold by volume), you are looking at $900 bucks or so.

The only thing to watch for is that the dimensions are not exact (pin holes will need to be reamed) and the material is not very strong, despite claims.

I have shot stereolithography pistol frames, and they seemed to work just fine for the 150 rounds or so we put on them.
 
owen said:
The counter is easy...

With all the plastic junk on the side of the magazine you have plenty of room for a long resistor. Just set up contacts on the magazine follower to run along the resistive rod, run the value thru an A to D convertor, fiddle with an second adjustable resistor to make the value correct, and plug the number into the 2 digit LCD.

With steel magazines, you could probably insulate the followers, and use the mag tube itself, but you would need a wheatstone bridge to get teh sensitivity you would need.
Click to expand...

Every once in awhile, someone comes along and reminds you there is so much you don't know. :)

Tex
 
this shell is prolly worth the 50 bucks to help you plot:
unbuiltm41a-340x255.jpg

http://www.cushmanpaintball.com/replicaM41A.html

this one is much nicer, but its 400 bucks:
al055-b.jpg
 
Put simply, it looks a lot like the bastard child of an AR-15 and a SPAS-15, whomped 'pon twice with Our Friend The Ugly Stick.

'Course, the M41 ain't exactly representative of Classy, Soulful Firearms Everywhere, but I digress. :D

~GnSx
 
>I'm not sure I understand what you mean. The back-end of the 870's receiver is pretty much almost butted up against the magazine (excepting any kind of attachment method that uses a screw into the stock-screw-hole on the 870)<

Ok... I'm looking at the picture on M41A.com, and at my Mossy. Looks like the shotgun is attached WAY forward: the back end of the ejection port on my Mossy is a hair forward of the trigger, whereas it loos like the one pictured has a good couple inches...
 
M4A1PULSE RIFLE eh? Can I have mine in .223/5.56, and manganese phosphated please???

.223 is lighter than .45 and arguably does more damage to tissue...

Crossfire- pump action .223=:barf:,(negates the speed of the follow up shot) IMNSHO. I don't mind having to pump the 12 guage:neener:!!!!
 
Hunter Rose said:
Ok... I'm looking at the picture on M41A.com, and at my Mossy. Looks like the shotgun is attached WAY forward: the back end of the ejection port on my Mossy is a hair forward of the trigger, whereas it loos like the one pictured has a good couple inches...
Click to expand...

Good points.

A) In the "real" thing, they used 870s, which are built differently, so there's bound to be a difference between an "M41A" built with an 870 and one built with a Mossy 500/Mav' 88.

B) I think they probably cut the trigger guards off , which probably seriously affects how far apart the ejection port and trigger/trigger group appear to be.

C) This point merely exists because a list with only two points is the second most useless thing in the listiverse.

~GnSx
 
Too Many Choices!? said:
M4A1PULSE RIFLE eh? Can I have mine in .223/5.56, and manganese phosphated please???
Click to expand...

Build your own! :neener:

You could probably do that pretty handily, actually. Short barreled AR-carbine or AR-pistol (either of which would have to be SBR'd), flat top, with the plasticky stuff built around it, using 20-round straight mags with special floorplates/bottoms attached for the M41 magwell, and you'd have to figure out how to do the M41A style retractable stock on the AR platform. Be an interesting challenge, no doubt, but I'm not a Clever Dan like some, so I'll leave that one to the philosophers.

:D

~GnSx
 
>A) In the "real" thing, they used 870s, which are built differently, so there's bound to be a difference between an "M41A" built with an 870 and one built with a Mossy 500/Mav' 88.<

Hmmm... I seem to recall it being fairly similar to the 870...

>B) I think they probably cut the trigger guards off , which probably seriously affects how far apart the ejection port and trigger/trigger group appear to be.<

True. However, the trigger of the grenade launcher is supposed to be right by the mag well (that's the little opening there). So pushing the gun back like that would actually make it MUCH more functional...


Now *I* want to build one... :(
 
I love the idea, and have been a long time fan of the movies(s). If you look at the current day HK XM8 rifle, that IMO could EASILY be turned into a M41. Or for that matter, look at the G36\XM8 series of weapons, to me they resemble what could have been a Pre-M41A weapon (Following Colonial Marine timelines of course). :D
 
http://www.arniesairsoft.co.uk/?filnavn=/projects/aliens/m41.htm

m41a.gif

What is it really? Well, it's basically a M1A1 Thompson, combined with an underslung grenade launcher. The launcher is actually a Remington M870 shotgun encased in parts from a SPAS12. The rest of the parts are all custom made (the carry handle, shell, stock etc.).

>>>>>>>>>>>>>>>>>

30.jpg
http://www.tk560.com/m41a.html

The SPAS/Rem870 "Grenade launcher" is by far the most challenging part of the whole build. My first attempt was to use some cheap airsoft SPAS12. As it turns out, these are not very accurate, complete, or to scale. A version can be made to work, but the airsoft cage will require a lot of modifying. Locating a real SPAS12 pump handle and cage is hard work. No online sources still have any, your best bet is to post some requests on the RPF, ASAP, or the BBC and other forums, and go to local gun shows looking for parts. I was lucky found a real SPAS cage/pump handle set.The grenade launcher requires a cut down Remington 870 shotgun and a lot of custom fitting/cutting.In addition, there are several greeblies to add to make this work. To complete the grenade launcher requires destroying a functioning Rem 870, and chopping parts of the SPAS. For me, it is the hardest part to get going. I really hate messing up perfectly good parts!

I had the option to cut down a real Rem 870 or use a resin replica from Kip. Remaining true to the original mission of this prop, [to build it like the originals prop makers did,] I decided to go with the real one. The only change will be to use a dummy wooden dowel barrel, deactivate the bolt, weld a spacer block in front of the receiver, effectively destroying a perfectly good 870. This keeps it legal and keep the 870 from being able to chamber a round. This way, I still get the real parts and keep it legal. I can sell the barrel on ebay along with the stock parts and re coop some money. One of the best sources for real Remington 870's are local pawn shops. These are very common, and can be had for as little as $150. Ask for an "Express" these have plain stocks, and a matt finish. I also got a resin replica from Kip, and I will use it along with the extra parts I have to build a stunt version M41-A.
 
Heh, this thread made me think of the Morita too. It would probably be an easier project, as far as I know its a Mini-14 and an Ithaca Model 37. I really hated Starship Troopers though (the movie, not the book, the book was great).
 
Spiggy,Spiggy...

http://www.arniesairsoft.co.uk/?filnavn=/projects/aliens/../morita/morita.htm

Anyway, back to the construction of this sci-fi replica. The MORITA is built in a tried and tested 'under and over' design, with an automatic weapon at the top, and an underlsung shotgun at the bottom.

The rifle in the top half, is a heavily modified Ruger Mini-14, converted into a 'bullpup' design. The lower firearm, is an Ithaca Model 37 pumpaction shotgun.
 
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