expansion chamber??

[Dudelittledude]

I keep seeing people talk about expansoin chambers but i have no clue what they are. can anyone enlighten me? should i buy one?

[DeathSilence]

Hello, x-chambers (expansion chambers) are good! if u dont ahve one on ur gun get one i subjest. It helps with the efficency of the Co2 and in cold weather they delp alot. They dont let ur gun freeze up. If need more info just ask or e-mail ember114@hotmail.com

[MICK]

They also help with more constent velocity