This is a very well made Tokyo Marui Hi Capa 5.1 gas airsoft gun, modeled after the OPS M.R.P Cal .45. This is a great gun to play with and a fantastic sidearm. Good weight and balance gives it a great feel in your hand. It fires .2 or .25 grade bbs (anything smaller is not recommended) and uses hfc134a gas. Its fps is about 220 and is capable of being upgraded. It is also very accurate. Included with the gun is a 31 round primary clip and a 25 round back-up clip. It features adjustable sites, grip safety, and possibility for a laser sight or flashlight under barrel mount. The slide locks back when ammo is depleted and easily releases upon loading a new mag. Metal internal mechanisms give the gun great durability.NOTE: This is not a real firearm and never has been. This is a toy that never has and never will be able to shoot live ammo. It has a blaze orange barrel tip as well as a removable blaze orange barrel plug. Must be 18 years old to purchase. This airsoft gun is a high end product that is used and appears used, but is still in fine working condition. No returns. If you have questions, please email me before bidding, I will do my best to answer any inquiries you may have and set your mind at ease. I try to make my transactions as easy and satisfying to the customer as possible. Thank you for your time!