On the redwolf airsoft shop it said that the CA M15A2 has 350fps
stock it shoots at roughly 290, it probably does shoot 350 stock like redwolf says, with .12s...
My CA M15A4 tac carbine chronoed between 330 and 338 fps on the first game I brought it to, using Excel 0.20g BBs. I chronoed it several times throughout the day and it was always between 330 and 338.
mine chrono'ed 290-300 out of the box. A4 rifle version.