https://www.amazon.com/Omega-RV044-Revolver-Chamber-Gunlock/dp/B004Y7CDZ0/ref=pd_bxgy_img_2/139-4739110-7977064?_encoding=UTF8&pd_rd_i=B004Y7CDZ0&pd_rd_r=b81add77-30ce-4b46-8d25-c2fa22e6e443&pd_rd_w=L6qIV&pd_rd_wg=Rd77t&pf_rd_p=ce6c479b-ef53-49a6-845b-bbbf35c28dd3&pf_rd_r=A47X78XVHD78SGR2XQP4&psc=1&refRID=A47X78XVHD78SGR2XQP4
Might as well just buy it from them the people selling you the gun.