Review: Zius BK1S & BK2S

Not a well structured review video, lol. tl;dr ver: bk1s - 175fps+ bk2s - 155fps+ 1s and 2s is exactly the same thing except for the handguard, buttstock and barrel Proprietary barrel and magazine T238 Electronic Trigger System Programmable 2 shot burst Parts such as the handguard and buttstock are interchangeable