Improve your shooting skills without leaving home! This 40S&W Dry Fire Training Laser Cartridge is designed specifically for 40S&W caliber firearms, allowing you to safely and effectively perform dry fire training at home. The built-in precision laser module emits a red laser at each shot, simulating a real shooting reaction, allowing you to practice without consuming real bullets. This training laser bullet is very easy to use and does not require complicated settings. It not only helps you improve your aiming accuracy, but also enhances your reaction speed. It is suitable for practitioners of all shooting levels, especially for those who want to improve accuracy and shooting proficiency. Whether it is home training or shooting simulation practice with friends, the 40S&W Dry Fire Training Laser Cartridge is an ideal choice for you to improve your shooting skills. Save time, save bullet costs, and enjoy a training experience similar to real shooting! Notice: 1. Please make sure that the gun is safely unloaded when using this product and follow the product instructions. 2. This product is a training laser bullet and is only used for simulated shooting. It is not suitable for actual combat or real shooting. 3. To ensure the best user experience, please check the laser module regularly and replace the battery.