This new MCS PDW Buttstock let you attach an air tank directly to the stock. Using the air stock setup, you don't have the need to use an airline or have to attach to a bigger tank. This is the best compact setup you can get with the air tank for a PDW style rifle.
You can also add in an optional to include a remote adapter with this buttstock kit. This way you can switch between a tank and remote line with your PDW buttstock setup.
MCS PDW Stock is made of aircraft aluminum for strength as well as reducing the overall weight. It is all-metal construction and comes with standard remote connector. Compatible with all markers with a rear air ASA (TI5, Milsig, TMC, Maxtact, RAP4, TACAMO, Etc.)
You can get the buttstock only to use with a tank you already have or an optional tank.
Short: Best for 13ci cylinder, fully entended 11 inches, fully closed 4.5 inches (without tank)
Medium: Best for 17ci cylinder, fully entended 13 inches, fully closed 4.5 inches (without tank)
Long: Best for 22ci cylinder, fully entended 15 inches, fully closed 4.5 inches (without tank)
Tank Option: 13ci, 17ci, 22ci
Remote Line Adapter: Optional