Streamlight Accessory STL69902 M-16/ AR 15 RAIL. Streamlight has made this all black gun mount. It will fit an M- 16 and an AR- 15 rail. Set includes 2 screws, silver bracket, black rail and a tool to get these items screwed in correctly. This mount fits the Strion and TL Rail Mounts and TLR series lights using the Glock key.