yea i know someone that has this gun...its not very popular but its not a bad gun...the gray one looks really cool and u can get a new one for around 450 or mayb less...
i believe it operates near 300 PSI which isnt bad and it has autockocker barrel threads...also it is set at 20 BPS...ive shot my friends and its not bad...i just dont kno how upgradable it is