Check the listing for details. Strikeman Laser Cartridge .223/5.56. Condition: New. Listed at 41.40 USD. Improves Shooting AccuracyWith Strikeman, your aim will get better, faster. Customers report a dramatic increase in shooting accuracy within only 2 weeks. Saves You MoneySay goodbye to range fees and expensive target ammo. Practice shooting as much as you like without breaking the bank. Safe, Non-Damaging & QuietOur laser cartridge is safe for your firearm, performing like a blank that makes no sound when you fire. Practice at home! The laser cartridge is designed without a rim, so the cartridge doesn’t get ejected after firing. The back of the laser bullet has a rubber button pad that safely absorbs the impact of the firing pin and triggers the laser to strike when the gun is fired. The cartridge is 100% safe for your firearm, and will not damage the weapon during use