Get complete rail protection with minimal weight with the BLACKHAWK! Low Profile Rail Cover. These rail covers are made of lightweight Santoprene to provide a rubbery grip surface and can be easily cut to size for custom fitting. Each cover offers enough length for 18 rail slots. Fits most Picatinny spec rails 18 slots of length can be cut to size for a custom fit Ladder-style cover offers very low profile Protects unused rail areas from Magazinee Shields operator from sharp rail edges Clip onto rails without removing other attachments Rubbery surface for better feel and improved weapon control.