Paintball guns can cost hundreds of dollars, but you don't need to spend that kind of money to find a reliable gun. Here are some of the best deals you can commonly find for less than $100. All of the guns included on this list are semi-automatic, mechanical, blow-back guns. If you are willing to spend a little bit more, check out the top guns that cost less than $150.
1. Azodin Kaos
The Kaos is easy to use, quick and accurate. Its trigger pull is so nice that you sometimes forget you're shooting a mechanical paintball gun.
The US Army Alpha Black is manufactured by Tippmann and is designed to take a beating and keep on performing. This paintball gun is simple, reliable and durable. The Alpha Black is commonly available for just less than $100.
3. Spyder Xtra
Spyder does a great job with its entry-level paintball guns and the Xtra is a great example. It comes with a drop forward, expansion chamber and easy-out bolt. It shoots well and is very easy to maintain. The Xtra can be found for around $80.
The Piranha GTI is an entry-level marker that packs quite a punch for its price. It comes with a gas-through foregrip, a flush-cocking bolt and a clamping feedneck (which is very range in this price range). GTIs are very easy to maintainand cost around $70.
5. Spyder Sonix
One step below the Xtra in features and price, the Sonix comes with an easy-out bolt and metal foregrip. It is very easy to maintain and performs very well considering it can be found for less than $70.
The Victor is the base model in Kingman's Spyder lineup but still comes with a bottom line and easy-out bolt. It is incredibly simple to use and maintain and costs less than $60.
8. Spyder MR1
The Trilogy is WGP's entry-level paintball gun intended to fly on the coattails of the legendary autococker line of paintball guns. While the Trilogy doesn't warrant comparison to the "true" autocockers, it does hold its own as an entry-level gun costing less than $80 or as a package with a CO2 tank, mask and hopper for around $140. As far as I know the Trilogy is no longer being produced but it is still very commonly available and WGP continues to offer support for it.