Aimpoint Red Dot Sight
Any barrel will do fine
Possibly a stock of you are into woodsball/ mil-sim
Expansion Chamber if you insist on using CO2
Picatinny Rail x2
Loose Tank Adaptor Bolts
After researching ALL the entry level markers out there (Spyder MR1, Tippmann 98, BT-4, Brass Eagle [LOL], RAP4 T68...), I narrowed down my choice of markers to either Tippmann 98 or BT-4. BT-4 beat Tippmann 98 only because it has two picatinny rails instead of Tippmann 98's one. I am happy to say that I have not regret my purchase and feel quite confident in the field with this marker.
Upgrade wise, this marker is extremely flexible. Any picatinny rail accessories can be mounted onto your BT-4. Unfortunately, you can really use only the back halves of your top picatinny rail because the hopper will get in the way. You can remove the foregrip to mount lights and stuff on your bottom picatinny rail, but why? I'll therefore suggest you prospective BT-4 owners to get maybe some Picatinny Rail extensions. Also, remember two key things, that BT-4 accepts only A-5 Barrels and Tippmann 98 Stocks. You mix them up, expect to pay a second visit to your pro-shop.
It is a good entry level marker. Keep it clean, perform routine maintence, and it should last you a long time.
9 out of 10
Last edited on Thursday, September 18th, 2008 at 6:37 pm PST