For example

You fill the grenade with gas and throw 65 bullets in along with the stopper so you can close it and shoot

steel cylinder

The Gamo GX-40 comes with a 10 shot magazine so you can fire the shots quickly and easily without having to fill pellets all the time

so you can attach 11 mm red dot sights

Maple Leaf Decepticon GBB Hop-up gummi Hop-Up Degrees:60 Degrees For exampleMaple Leafs Decepticon rubber is the perfect rubber for those looking for maximum precision for your pistol. With their concave inner nub, there is maximum contact surface every time, and a c clip is also included to get optimal tightness with your nozzle. Fits all GBB weapons that use TM spec hop up rubber. For optimal rubber selection, follow this table: 50 degrees = <110 m s 60 degrees = 90 120 m s 70 degrees = 110 140 m s 75 degrees = 130 150 m s