The Shroud adds some light discipline to your noise discipline on the Maxim 9. Should work with most pistol lights. Designed to work best with this keymod to picatinny rail: https://www.amazon.com/BRAVO-COMPANY-Aluminum-Picatinny-Section/dp/B00ITWLP7S?pd_rd_w=9I07l&pf_rd_p=e19298cc-53cc-437e-954a-a37f25383b20&pf_rd_r=FG9Z607KHCJE1M7HYAK9&pd_rd_r=c7f89cad-1565-44e7-ad30-ebda3188639d&pd_rd_wg=Irf2K&pd_rd_i=B00ITWLP7S&psc=1&ref_=pd_bap_d_rp_31_t