I bought a Well MB06 I am building into a plinker/sniper, and it came with a left handed bolt I will never use. This is the same rifle as the Echo 1 ASR and CYMA M187, so this left handed bolt will fit both those even though the companies do include it in the package like Well. I switched it to try it out and it works fine and is an easy upgrade to do, but I am a righty. If anyone wants it I will trade or sell.