The BT-4 ERC™ comes standard with the BT Electronic Grip Frame and BT Rip-Clip™, which allows you to experience the fastest possible rate-of-fire. The Rip-Clip also features a built-in rip drive. The innovative BT Rip-Clip™ force-feed loader system mounts easily onto any BT-4 marker. Simply remove the standard feed elbow, slide on the Rip-Clip, align the feedport and secure with the thumb screws. If you have a need for speed, this is the marker that delivers.
The BT Paintball Design Combat ERC is newer, so it should be commonly available, both new and used.
everything else on mine is NICE to have, but not necessary
Great battery life
changing firing modes a pain
heavy AFTER fully equipped
gas hog w/o expansion chamber
I joined a team full of Tippmann users and was egged on to buy either an A-5 or a X-7. Being the rebel/nonconformist I am, I decided to go a different route and buy the BT-4. After a year of using it I'm absolutely satisfied w/ this marker. It easily out performs any Tippmann! It essentially takes every thing great from the Custom 98 and A-5 and puts it together into an awesome work horse. W/ all my mods it has great distance/accuracy and fires ridiculously fast. My bros and I are yet to test the fire rate, but I can safely say it fires about 20 bps. Not to mention it's ridiculously loud. Many a time have I been unloading on my opponent and kept on firing after he called himself out because I was unable to hear him. Great times. Also, after dropping and falling on it numerous times it continues to put out great stats. It will NEVER break balls! Since I first used this marker I have never had a ball break! (except the one time I bought cheap dented balls on sale, but even then it had great performance) Finally, after playing about 10 five hour games I haven't had to change out the batteries on my E-grip, Rip-Clip, or red dot once!
Unfortunately, w/ all my mods it comes out to being an extremely heavy marker. Although, my position is heavy gunner and I'm a pretty strong dude so I don't mind a 25+ pound gun. Another down is the lack of ability to change between firing modes on the fly. In other words if you want to change from semi to auto you have to take out 4 screws on the handle and toggle some confusing switches. BUT, unless your in a restricting tournament I don't know why anyone would want to go out of full auto ^_^. Finally, w/ the expansion chamber I get about 1100 shots per 20 oz tank. W/o the expansion chamber it falls to the about 900. I suggest buying a remote coil and a vest or pod holder that carries your 24 oz CO2 tank on your back.
Out-freakin-standing machine. If you are looking to get a setup like mine expect to pay about 500ish. The basic BT-4 is a great starting point and once you get the funds you can slowly build up your marker. Hope this helps.
10 out of 10
Last edited on Wednesday, December 24th, 2008 at 9:10 pm PST