Picked up my obsidian 45 on Friday and threw it on its new host. Used the griffin armament camlok mount and piston. Shot on Sunday and it worked flawless. Camlok kept everything tight. Didn’t back off at all in the 100 rounds I put through it. Now just waiting on my sandman s.2yr ⋅ A2Cerakote ⋅ r/NFA