The PL350 is the much-anticipated handgun light that combines modularity and compatibility from Modlite. Utilizing two rail keys (included) the PL350 has the ability to fit both universal and 1913 handgun rails. And with a "out the front" battery compartment you don't need to remove the light to change out the battery. Speaking of batteries, the PL350 is powered by a single, rechargeable 18350 (one battery included with light) that is both well known and well regarded by currently users of Modlite. The PL350 is available with 4 different options for light heads. The PLHv2, the OKW, the IR 940, and the IR-850. PLHv2 If you're looking for the be Mfg: Modlite Systems