The NcStar Shotgun Magazine Tube Rail Mount is specifically designed to fit most 1 inches diameter extended shotgun magazine tubes, providing an excellent platform for attaching a variety of accessories. When mounted on your shotgun's extended magazine tube, this rail allows you to securely attach multiple Weaver and Picatinny style accessories, enhancing your firearm's versatility. The design features multiple attachment angles, allowing you to mount accessories such as lasers and flashlights at any of the five available positions. This includes the standard 3, 6 and 9 o'clock positions, as well as the unique 4/5 and 7/8 o'clock positions, giving you flexible options for accessory placement. In addition to shotgun accessories, this rail mount can also accommodate any 1 inches diameter accessories, such as scope tube bodies, flashlights and lasers. The installation process is straightforward, utilizing the two provided Allen head bolts to secure the mount to the magazine tube. However, please note that installation may require disassembling the shotgun barrel, magazine tube and end cap/clamp for optimal fit and function. Enhance your shotgun's capabilities with the NcStar Shotgun Magazine Tube Rail Mount for a tactical edge in the field.