This tight bore barrel is superb for the price. A 6.03 cost less from PE than a CA or G&G 6.04 and is made out of the exact same aluminum. I put one of these in my G&G M4 combat machine and the thing is as accurate as my CA M16 with a 6.04. Clean and very smooth bore allows for really accurate shots and increases range and FPS. Easy to install, if you are new to upgrading airsoft guns, a PE tight bore is a good beginners lesson
But do note, you need to do a few things to make tight bores work really well:
1: Clean them every now or then. If you are using good quality ammo, then the barrel wont gunk up as fast and you can shoot more
2: Use good ammo. Walmart crossman ammo is not bad for stock 6.08 barrels, but they will drastically decrease your accuracy with tight bores. You need good ammo - I recommend G&G ammo... especially .25's in your harder hitting guns.
3: Have a good hop up, often times your stock JG and CYMA hop ups are not even good enough for the stock barrel and cheap ammo... so if your gun doesnt shoot as far as you would like or as accurately, check your hop up.
Nothing that I can think of, other than you have to change to better ammo
Rating: [5 of 5 Stars!]