Hello, bought Inokatsu M4 thought that this is a flagman of all the gbb rifles, but i was wrong or i am doing not right something. The main problems are that after few shots or sometimes after 1 mag (50bbs) my gun stuck/jam or it just push gas out ,then i take mag and i see few bbs stuck/crushed . Opened the gun i noticed few parts heavily wear of even imprints. From my point of view the bolt carrier doesnt work properly it is also quite loss and it is not align . This is just my theory , waitting for experts thoughts. I attached photos . Waiitng for replies , thank you