HPA definately i rented an HPA tank twice now and its is much more efficient than CO2
Strengths:
In Review
Weaknesses:
In Review
Review:
Pros:
-accurate
-co2, hpa, nitrogen compatible
-simple construction
-not much maintanence required
-with the right upgrades you can go speedball or woodsball
Cons:
-no type of field strip
-disassembly is simple yet stupid, gun splits in 2 halves unlike the spyder field strip where the bolt just slides out
-some people will make fun of you because you own a tippmann, so just shoot them and prove them wrong
Conclusion:
all in all this is a good gun for its available upgrades and it is a reasonable gun stock give it a try but later on you should upgrade to an Electric gun