The civilian PDW and my Sig MPX Copperhead

C-grunt

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A while back I saw some videos on Youtube and read some discussions about the civilian PDW. This theory differs from the military PDW as I dont need it to necessarily penetrate body armor and it needs to be more concealable that a military PDW such as a P90. The main theory being that you could have this gun stowed in a laptop bag or other small bag and carry it around with you on your day to day life.

I began looking around and found the K configurations of the PCCs to be a bit to big. Most of the pistol chassis systems seem to be kind of junk, except for the Flux Raider which is just always out of stock. The B&T TP9 fits the bill very well but everything Ive read/watched about it says it's not great and it's 2000 bucks. The Army's Sub Compact Weapons trial brought about the B&T APC9 in mini configuration and the Sig MPX Copperhead. I have friends with both and they both work awesome, except again the Sig is 2k dollars and the APC is 2500 dollars. I had decided I was going to build up a MPA Defender Mac11 clone. From what I had put together the gun with a side charger, picatinny top, Glock mag grip, folding brace system, and flash hider, the total cost would be around 1100 bucks.

I was getting ready to buy all the parts when I saw PSA had a Daily Deal sale on the Sig MPX Copperhead for 1300 bucks. It's more than I was looking to spend on this project, but overall I think it's a better overall weapon platform than the Mac11 clone. I picked it up this weekend along with an A3 Tactical folding brace. I have two 35 round mags on the way to go with the stubby 20 rounder the gun comes with. I scavenged some MBUS irons and a Holosun from other projects.

Im not sure how I want to set up the sling yet. There is a QD socket on the back of the gun under the pic rail. That or buy a pic rail QD and run the back of the sling on the folding brace. I planning on finding some more compact iron and then run a small light off the side up front. Or maybe even a pistol light at 12 o'clock. Eventually I'll upgrade the red dot.

Overall Im quite happy with the results so far. I havent shot it yet but the ones I have shot are accurate enough to hit sihlouettes out to 150 yards no problem. Also it's not that much bigger than my Glock 17 while giving me far more capability at range.

20240226_131050 by chase, on Flickr

20240226_131117 by chase, on Flickr

20240226_131100 by chase, on Flickr

20240226_131151 by chase, on Flickr

20240226_131139 by chase, on Flickr
 
I’ve got a poor man’s version, a 1st. gen KT Sub2K that fits in a shoulder laptop bag.

Takes inexpensive Glock mags up to 33 rounds.
 
Does that folding stock qualify as a 'brace', or did you have to got the SBR route? Really a nice rig.
I had the full size MPX, and mine was a lot less than reliable, and the $60@ magazines were an issue. But a lot of folks seem to really like the platform.
Now if you really want a small PDW, have a look at the original Scorpion, with a folding wire stock (yeah, that has to be SBR to be legal). They are .32s (and some .380s), but they are hardly as big as a handgun.
Moon
 
Does that folding stock qualify as a 'brace', or did you have to got the SBR route? Really a nice rig.
I had the full size MPX, and mine was a lot less than reliable, and the $60@ magazines were an issue. But a lot of folks seem to really like the platform.
Now if you really want a small PDW, have a look at the original Scorpion, with a folding wire stock (yeah, that has to be SBR to be legal). They are .32s (and some .380s), but they are hardly as big as a handgun.
Moon
That's a brace. There is a strap that attaches to the back part.

Sig released new mags that are a little cheaper. You can actually buy them from the company that Sig contracts for about 30 bucks.
 
That's a brace. There is a strap that attaches to the back part.

Sig released new mags that are a little cheaper. You can actually buy them from the company that Sig contracts for about 30 bucks.
That is a significant improvement. The cost of magazines (and the incompatibility of Gen I and Gen II mags) was one of several things that led me to bagging the SIG. Traditionally, SIG has been almighty proud of their magazines! ;)
I haven't been watching; are braces again permitted?
Moon
 
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