PDA

View Full Version : My first piston gun using DD, BCM, AA and AAC


Aggunner
10-18-09, 16:47
I've always wanted an 11.5" SBR but I could never find a barrel I wanted and then the whole rush hit so I always used 10.5" barrels. Well I decided to give a piston gun a try and I wanted to build it in a configuration where I would see the most benifits so I made it a SBR that will be suppressed.

I'm waiting on good ole BATFE so I can take posession of my M42000

http://aggunner.com/pictures/ar/AA/aa.jpg
http://aggunner.com/pictures/ar/AA/aa2.jpg

After putting everything together there was a glaring problem

http://aggunner.com/pictures/ar/AA/piston.jpg

I was not about to remove the brake every time I wanted to maintain the piston soooo.... what does a normal person do?

whip out the dremel and free hand a relief cut

http://aggunner.com/pictures/ar/AA/piston2.jpg

turns out aggie engineering does work sometimes

http://aggunner.com/pictures/ar/AA/piston3.jpg
http://aggunner.com/pictures/ar/AA/piston4.jpg

Build is as follows

BCM A3 upper
BCM 11.5 barrel
Adams Arms piston kit
Adams Arms 1 piece carrier
Larue bolt
DD 9.5 FSP lite rail
Geissele SSA trigger

But the fugger is louddddddd

on the very first shot, the blast turned my sordins off and I go "oh shit, I just went deaf." "then I realized my muffs turned off"
docsherm
10-18-09, 18:21
That is a great build. I am looking at the exact same build, minus the AAC. I am going with the GemTech G5. Very nice!!!!

What made you go with the comp over the flash hider?
Blob
10-18-09, 19:39
Do the PMAGs drop free with your SA lower? They don't with mine.




That is a great build. I am looking at the exact same build, minus the AAC. I am going with the GemTech G5. Very nice!!!!

What made you go with the comp over the flash hider?

Probably because he's going to be putting an AAC can on it.
Aggunner
10-18-09, 20:02
like he said, I got the brake since I hear they act like an additional blast baffle.

And the PMAGs wouldn't even start to go in, but I sent my lowers back and they work fine now
Dunderway
10-18-09, 20:13
Very cool.
docsherm
10-20-09, 22:10
That makes sense.
SO_THERE_I_WAS
10-21-09, 18:17
You did that relief cut free hand? Holy Cow that is even ! ! ! Also what do you think of the AA piston? I have one of their kits waiting to build up.

So There I Was...
Frntsyt
10-21-09, 20:33
Blob,
I had several Superior lowers that Pmags wouldn't fit in. If you contact them, they will fix them all up quickly....now they work fine.