AR15.Com Archives
 M4 AX7 – new multi-caliber AR design. Pictures.
the-troubleshooter  [Member]
1/28/2008 2:05:50 AM EST








New receiver (upper and lower) standard length for M16/AR15 rifles. Multi-caliber, accepts all M16 (STANAG), AK and M14 mags. Bolt stop for M16 and M14 mags. Most internal parts stay the same.
Bolt carrier retrofitted with ambidextrous bolt handle, trigger group original M16 (modified safety and auto sear). Less friction surface between upper receiver (steel) and bolt carrier, more space around, will better work under harsh conditions. Can accept larger, heavier bolts (7.62x51/.308) or even different bolt designs.
Receiver has a hole completely going through which takes the pin of a gun rack. Safety snaps into a circular groove of that pin. Safety must be on “safe”. Otherwise won't fit into the rack.
So first stick the muzzle into the front hole of the gun rack than push the receiver hole towards the pin – safety lever will engage automatically. To get the gun off the rack take the pistol grip, push the rebounding safety lever upwards pull out the rifle – ready.
Rack can be mounted either way, muzzle to the right or left (up and down…).
In that receiver hole you can also see if the hammer is cocked, if so a bar juts out. The pin of the gun rack has a slot. If the pin is mounted with the slot forward the gun can be put into the rack with hammer cocked (as shown) – if mounted with the slot rearwards, only with hammer decocked. As required by the user. (Yeah, can be put on “safe” with hammer down.)
Rack pin and receiver hole can be used for other applications as well - locking the gun, power supply for electronic equipment, data transfer a.s.o.
Non-shooting prototype (german gun law), not yet completely finished but enough for a few first pictures - video coming later.
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ZitiForBreakfast  [Team Member]
1/28/2008 2:07:31 AM EST
Um...
THOLL223  [Team Member]
1/28/2008 2:12:57 AM EST
Is that thing pink?
Postal0311  [Life Member]
1/28/2008 2:40:04 AM EST
Nifty. I look forward to seeing how this competes with the MGI system.
M4builder  [Team Member]
1/28/2008 2:46:14 AM EST
pre-production prototype.

Get with us when you have a production model.....that is made in the U.S., so we can buy it.
the-troubleshooter  [Member]
1/28/2008 4:02:36 AM EST

Originally Posted By THOLL223:
Is that thing pink?




It's a light brown more like this. I loaded the pictures up from the camera as they are. May be it worked as an additional eye-catcher at least...
evileyeswatchin  [Team Member]
1/28/2008 8:04:36 AM EST

Originally Posted By M4builder:
pre-production prototype.

Get with us when you have a production model.....that is made in the U.S., so we can buy it.


+1
chibajoe  [Team Member]
1/28/2008 8:12:54 AM EST
Very interesting; how do you change out barrels?
MajorAR  [Team Member]
1/28/2008 8:16:54 AM EST
roguetrader  [Team Member]
1/28/2008 8:36:16 AM EST
so for 3 of the calibers listed the set up seems fine

but for the 7.62x51 the carrier would need to be able to travel farther rearward than with the other calibers so I don't see how that would work out.

the idea is solid it's just a matter of competition with manufactures that are already out there.
the-troubleshooter  [Member]
1/29/2008 1:46:11 AM EST

Originally Posted By Postal0311:
Nifty. I look forward to seeing how this competes with the MGI system.


Thanks. The MGI system doesn't take coupled AK mags as pictured above and they don't have a bolt hold open function with M14 mags (due to space limitations) if I recall right.
BTW, couldn't find the MGI thread (18 pages or so) in the category “New AR products” anymore – where is it?
the-troubleshooter  [Member]
1/29/2008 3:58:59 AM EST

Originally Posted By chibajoe:
Very interesting; how do you change out barrels?


As usual, I can't see the reason behind this “not more than 20 seconds for a (different caliber) barrel change” request. Of course it should be as simple and quick as possible. If necessary I can work out something in this regard as well.
RedFalconBill  [Team Member]
1/29/2008 4:16:00 AM EST

Originally Posted By the-troubleshooter:
BTW, couldn't find the MGI thread (18 pages or so) in the category “New AR products” anymore – where is it?


It is still there.

AR-15 » New AR Products » MGI Modular Weapons System (Hydra)

Last update was 9 January, 2008.
the-troubleshooter  [Member]
1/29/2008 5:06:47 AM EST

Originally Posted By roguetrader:
so for 3 of the calibers listed the set up seems fine

but for the 7.62x51 the carrier would need to be able to travel farther rearward than with the other calibers so I don't see how that would work out.

the idea is solid it's just a matter of competition with manufactures that are already out there.


With a different style carrier key and the ambidextrous bolt handle located more forward (design already prepared for this) the bolt carrier is able to travel farther rearward.
chibajoe  [Team Member]
1/29/2008 6:22:59 AM EST

Originally Posted By the-troubleshooter:

Originally Posted By chibajoe:
Very interesting; how do you change out barrels?


As usual, I can't see the reason behind this “not more than 20 seconds for a (different caliber) barrel change” request. Of course it should be as simple and quick as possible. If necessary I can work out something in this regard as well.


Actually, I was just curious. Logically, if you're going to make a multi-cal capable lower, you should make it possible to easily (as in, without tools) switch out barrels.
Armed_Philosopher  [Member]
1/29/2008 7:54:22 AM EST
I've heard of M16's made by Mattel but M4's made by Lego......

Just joshing. Looks like it should be very interesting.
the-troubleshooter  [Member]
1/31/2008 2:02:14 AM EST

Originally Posted By Armed_Philosopher:
I've heard of M16's made by Mattel but M4's made by Lego......

Just joshing. Looks like it should be very interesting.


Thanks, but LEGO?????! Come on…
In part it was a result of a discussion with some friends. Why do most of these new plastic designs have to look so fugly? 'Simply' take a classic weapon with a widely accepted look (MP 38/40) that already uses plastic receiver parts and combine it with a more modern rifle design and improve it in other ways. And that design enabled me to arrange bolt handle and safety lever in a way not protruding above the main surface of the gun. Makes it more comfortable and safe when carrying across your body f.i. And so the bolt handle has enough distance to the mounting rail - a problem with some other newer designs.
BTW I was astonished that no one was complaining about that M4 designation. The question was: What would attract my attention while surfing the web. M4 AX7 – WTF is this?!!!


Skammy  [Team Member]
1/31/2008 2:27:49 AM EST
Interesting.. look forward to seeing more
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