King Arms PDW Style Collapsible Stock for M4/M16 Airsoft AEGs (Color: Black)

"Pretty solid unit.The biggest pro is the battery capacity. I can easily fit a turnigy 1300mah 11.1 stick lipo which is 131 mm long. Because of this it's a pretty good option for compact dsg builds needing a higher output battery without messing with flimsy buffer extensions.

"Great product, very durable, it can hold a 11.1v Lipo.

"Good PDW style stock. A quick flip of the wrist holding the button on the bottom and the stock slides open easily. Has a nice positive retention button on the stock slide so you dont over extend the stock by accident. If you want to use it just as a brace the butt stock slides right off.
My only gripe about this stock is that you cannot fit a normal size stick 11.1 lipo in it. I ended up having to use a butterfly and shoving it in there. There's barely enough room.
I expected to have to do some custom fitting to my lower since I was not using a true PDW lower receiver so it does take some time to make it fit just right.
The battery tube could have been at least 1-2 inches longer to fit a stick lipo. Thats the only reason I cant give it a 5 out of 5 stars. Other than that there is no wobble in the stock and feels good and solid.

"Not universal. This thing didn't fit on any of my m4s without modification. But I bought one for each gun because of the price.