New barrel, stock is way too short and insanely loud
Clamping Feed neck
Stock feed neck
I bought this gun as my first personal marker. Over the past couple years I've been thoroughly impressed with it for only about $130 for the kit it was in. I play woodsball and I've yet to be let down by a mechanical failure. I've probably fired over 20,000 rounds through it by now and I've only ever chopped about 10 balls. The times that it has chopped the delrin bolt and open back make it very easy to squeegee in about 15 seconds. It's very reliable for a decently cheap gun. as stated above the stock barrel is terrible so I would suggest that be the very first upgrade you make. Then as with all spyder markers a new feed neck is a must. the stock neck is way too tall and fragile.
I would recommend this gun as a nice entry level gun. I've been impressed with it and plan to keep using it due to its reliability and accuracy with a new barrel. I give it a 10 because for a ~$100 dollar marker, it is reliable and with some work accurate.