I dont think Marushin has produced these for some time , This has been fitted with the alloy aftermarket slide and it worked perfectly the last time used but this was a few years ago so  cannot/will not guarantee the mag seals 

The alloy slide has a couple of marks (fingerprints )  that I have not attempted to clean off ...but hey they are not easy to come by

ejecting shells included .  

Im happy to converse via ebay if you want to see my (non airsoft ) seller profile so you can be confident in buying , sorry no paypal