Help with Jackal Shield

[Meat_Shield]

Ive replaced the needler's modle with the jackal shield, added some shaders and made it only left hand wieldable but every time i try to change the coll or fp view to what its supposed to be the game freezes... I dont know what im doing wrong ive followed tutorials and it just doesnt work. I need some help. AIM me at armageddonsquad if you can help plz