Compatible with 6 different Streamlight TLR series of lights - fits to your favorite gear; Attaches to M-LOK gear for seamless integration; Aluminum body is durable to resist rain, scratches, and impacts; Screws in for stable mounting to prevent your light from falling off; Lightweight design so it won't weigh you down; Compatible with TLR-1/2, TLR-9/10, TLR RM 1/RM 2 series lights; Durable aluminum body ensures it lasts for many missions