Huben GK1 - Tuning - Huma-Air Regulator Kit (in-depth) Installation Video
28:26
Huben GK1 - A more in depth look & a few must have upgrades !
8:13
Picatinny stock adapter for Huben GK1
0:56
Huben GK1 V3-R .22
9:38
Huben GK1 LoadingGate by NPE
6:46
Mounting Huma Regulator Kit into Huben GK1
41:48
Huben GK1 - Disassembly
7:43
Armas da Esgrima Crioula do Ferro Branco
25:50