Description Instantly activated universal laser sight for Picatinny or Weaver rail equipped pistols and rifles. Polymer material. One 1/3N Lithium or two 357 Silver Oxide batteries. Firearms, trailers, and some accessories are only available for purchase in stores. Each location follows all BATF and individual state/county/city laws to insure the desired product is legal for sale. Any info provided online is subject to change, please go to your local store for more accurate information.