Need some help identifing a shrimp

[gyro]

I have found a new shrimp in my tank. This little guy has come out of nowhere I imagine he came in the live rocks I bought over 7 months ago. He looks just like a cleaner shrimp but has orange claws with one claw bigger. He doesn't bother anyone nor is a mantis shrimp. I don't think he is a cleaner either, what can he be. Thanks for your help.

 

[green mariner]

do a search on the net for pistol shrimp, sounds like you are describing one of them!1
HTH