stock( Just for comfort and aim)
The magazine looks cool and makes a good grip but no neccsesary
if you ever make it full auto probaably low profile cyclone feed (an awesome hopper)
ive heard that bt apex barrels are supposed to be really nice and you can set it so it curvers bulltes slightly
Let me start with the durability of this gun, me,grandpa, and my uncle all have this gun and we play in the rain all the time, with my cousins bt 4 combats (basicly the same gun that shares allot ugrades with this gun and just less popular) But if the gun doss get very wett u r gonna want to dry it off and maybe not play with it pooring like crazy. Second this gun is VERY easily upgraded and can be ugraded alot. You can even get acog scopes and red or green dot sights,full auto, stocks and barrels. this gun can be less or more power with just an allen rench, you just put it in a hole turn it right for less power right for more.
I think any beginners or intermedite woodsballers (playing in the woods) should get this gun because as you begin to love the sport even more you can just spen like 20 bucks every now and then upgrading it