Chiappa M1-22 Extended 10+ magazines

[chillyrabbit]

Hi,

I thought I would share this 3d modelers 3d printed Chiappa M1-22 extended magazine.

It still is a work in progress but it would be nice for people to try it out and share their thoughts or maybe help model it.

He also modeled the stock 10 round magazine, baseplate, follower, and spring guide.

Spring wise he is currently using 2x 10 round magazine springs, but the black dog xform replacement springs might be a possibly be fit for a one piece spring.

When I tried to load it up I could fit 17 rounds, but a minor redesign can probably get it up to 20 or maybe 25.

 

[#1bcshooter]

looks like a fake 223 mag on a fake M1 carbine

 

[chillyrabbit]

I dunno it looks kinda of like the 30 round M1 carbine magazine. I got it printed in the white color just to easily differentiate it.

 

[Sun_and_Steel_77]

looks like a fake 223 mag on a fake M1 carbine

Stone Cold!

I would use a few choice words to describe the Chiappa M1-22 but I have to give them credit in the looks department. Very hard to tell it's a replica from a few feet away.

 

[Tompullings]

I like the idea. Can they be ordered or something or is it something you print yourself?

 

[chillyrabbit]

I like the idea. Can they be ordered or something or is it something you print yourself?

You have to print it yourself. You can check your local university and see if they have a 3d printing lab. There are also businesses that you can pay to 3d print stuff.

My trip report testing it after hand fitting it to my gun by filing the lips.

Just shot it today, last session before winter really gets going.

My set up is the 3d printed magazine, stock follower, 2x magazine springs, stock spring guide, and stock floorplate.

I also filed the right lower feeding lip to be about 0.5mm shorter.

After working it in a bit I can stuff 20 rounds of .22lr into the magazine, I shot 3x 20rd magazines.

I shot CCI Standard velocity.

1st Magazine: Feeding error on 12th, 16th bolt hung up on magazine (corrective action is to wiggle magazine until it feeds), 20th feeding error.
2nd Magazine: 12th,13th,14th bolt hung up on magazine (locked open and acted like a straight pull action rifle), 20th feeding error
3rd Magazine: 4th, 15th hung up on magazine, 20th feeding error.

Conclusion: The magazine does not consistently allow the bolt to grab the top round from magazine most of the time sticking on the feed lips. I'll try to file down a bit more and see if that would prevent the bolt hangup on the magazine feed lips.

The last round of each magazine would not feed, most likely due to the stock follower angling the last round of the magazine too much. (It would ram the last round vertically denting the case in the middle), If I 3d printed all the magazine parts it would probably synergize better.

But I would say this mostly kind of works if the person was willing to hand fit the magazine to their rifle.

EDIT: I shouldn't need to say this but the design is licensed under Creative commons non-commercial. So no one should be buying/selling this design for monetary value. I'll leave it up to the reader to decide what commercial purpose counts as.