This was my first ever pistol and it's never failed me. It's probably the most reliable RIF I've owned. It's small and compact so it's easy to attach it to your loadout. The mags are small and therefore, don't take up a lot of room to store in your rig. If the mags don't hold enough ammo for you, there are 100rd mags available also. With the mags being so small, if they do get lost, they're cheap and easy to get hold of.
The battery fits nicely in the top and is quick and easy to charge up. To change the battery is simple so I tend to carry two around with me however, the battery life is great as I've never had one die on me during a game day.
The glock gives you the option of single fire or full auto which makes it even more fun to use especially wearing a ghillie.
The quality of the product is strong and sturdy as mine has been dropped and bashed about a few times but still works perfectly. Range wise, it hits around 20-35m and can be upgraded to hit further if you wish.
I'd give this product a 10/10 as it's never let me down.
(Disclaimer - This is my own personal opinion I have made after using this product myself)