At the same price as the gen 3 (£95) it’s still as affordable as ever and is still 99.99% TM compatible, the gen 4 sports a more predominately textured lower frame, and a larger magazine release button to make reloads just that bit quicker, also it comes with adjustable back straps to expand the size of the lower frame to suit your hands. As with most Glock replicas the slide is manufactured from metal and the lower frame is constructed from polymer with metal internals. The gun sports standard non-adjustable sights with white highlights so you can line them up a little easier, the safety is found as a small silver plate under the 20mm picatinny rail on the bottom of the frame although it’s probably better to leave this safety off as it’s a bit hard to move, the guns main safety is built into the gun’s trigger, it is designed in such a way that you must actually pull the trigger to fire the gun. The gun has a rather hard to operate slide catch ( I installed an extended one on my model ) which you don’t actually need to use as you can just powersroke the slide when you put a new mag in which will release the slide catch so much easier. Performance is pretty standard 280 FPS on a cold day and 300 FPS on a warm one. Accuracy is certainly good enough for a sidearm as it has an adjustable HOP-up unit, adjusted by removing the slide in the typical Glock fashion and moving the wheel next to the barrel. The gun cycles very crisply with a nice little kick with each shot.