Sheridan used to make a great elbow that could replace the brass feed neck, thus lowering the profile of your hopper, all VM-68 barrels fit the Equalizer and I might get a longer one with porting or a muzzle break (this sucker sounds like a shotgun).
Built tough, easy to strip, surprisingly accurate stock barrel, stock venturi bolt broke few balls.
No weaknesses, but its impossible to get parts since it was discontinued.
The Equalizer is a blow forward design like the Automag. The blow forward action makes it a bit faster than other single trigger mechanical markers. At the time I bought it I had a higher rate of fire than my friends Spyders, Tippmann's and Brass Eagles. It was possible to out-shoot a non-mechanical hopper, but I rarely did (it isn't all about ROF in woods ball). The stock Venturi bolt made it fairly gentle with paint and I got few breaks in the chamber. It seemed to take any brand of paint (other than Brass Eagle, but then what gun would fire BE?) and I didn't even know about matching paint to a barrel until I got a second gun. The stock barrel seemed to be as accurate as any aftermarket barrel I tried. I prefer a longer barrel to give me a better sight line, but the stock barrel combined with a short body made it an excellent gun for close quarters.
After about 4 years the venerable Equalizer developed a valve problem (which is a longer trouble free run than any other marker I've owned). I could fix anything else on the gun (pretty simple design) but this required a trip in to Sheridan for some work. For some reason Sheridan slapped another grip on it (which had nothing to do with the problem) and sent it back to me in the same non-functioning condition in which it was received. I called and was referred to Marty Levan Sporting Goods in Lebanon PA where the marker went for some supposedly expert technical work (the Sheridan techs admitted they didn't know anything about the gun they manufactured but Marty did). Unfortunately Marty sent me the incorrect gun (a .22 cal air pistol which I immediately sent back) and then went out of business with my gun still in his shop. Had the tech support not been so bad I would probably still be using my equalizer.
Unfortunately anyone looking for an Equalizer now is going to have problems finding spare parts and technical support. Had Sheridan put more effort into selling and marketing the equalizer (thus proving an automag clone was possible) I think we would have a lot more blow forward guns than we do today.
It was a great gun and I would buy it or one like it again in a heartbeat. I've owned and own a lot of markers and I've never owned another one with so few problems for so long. I've even had to replace valves and air lines in Tippmans, so the one valve issue I had didn't indicate a defect. Unfortunately the lack of current support and parts means it would be hard to fix if anything went wrong.