This ASG CZ-P09 has a 14mm negative threaded barrel (with included thread protector) installed in it (worth $25) allowing you to attach a suppressor or a tracer, and a custom short-stroke kit (worth $15) that improves rate of fire and increases gas efficiency. The short-stroke kit is removable if you want the slide to lock back when the gun is empty. All three included green gas mags work great as far as I know, with no leaks. Hopup is adjustable and works great. Brand new, this would cost almost $200, so this is a great deal! Includes owner’s manual and original box (box has been shot a couple times on the inside and has part of the inside cut out so I could fit my flashlight in it as seen in the last picture, but you can’t see any of this from the outside)The first and the second to last pictures show how you could set it up with attachments - I am not including the tracer unit or the flashlight. You pay shipping. Thanks for your time, message me if you have any questions or offers or want more pictures!