Maybe not suck...the one Bushmaster AR-15 I've shot did okay.
But lets not confuse Bushmaster with FN. FN is among the finest weapons manufactures in the world, already produces about 3/4 of the firearms our own military uses, and has been testing the SCAR with our military already for almost a decade.
I was more interested in the ACR before it was taken over by Remington and Bushmaster. The original concept from Magpul was intriguing, and that was back before published figures had it weighing as much as a milled receiver AK. People don't expect their poodle shooters to weigh that much, esp when they are made largely out of plastic. Let's face it--it doesn't matter what hard rock anthem you put on your site's Flash video or what ninja'd operators you have show the rifle off--your market is pretty small with a $2800 MSRP for the basic, no frills carbine, and it only gets smaller when that carbine is over eight pounds. People can get a LMT MRP with or without the piston in 5.56 or 6.8 SPC for hundreds less and save over a pound in weight with proven technology from an established company that actually supplies fighting militaries and still retains the barrel change capability of the ACR. Or they can still spend hundreds less and get an XCR, again, much more tested, weighs less, quick change barrel, caliber conversions already on the market, tons of stock options...
Then they go and shoot themselves in the foot with a recall and people's skepticism about the price and quality of the rifle seems justified, because, well, it is.
Comparatively, the SCAR is a more proven design from a more reputable company. You can roll with the SCAR-H (17S) and get a 7.62mm carbine with a published weight of only 8 pounds--several ounces less than any version of the ACR--and has a lower MSRP.
The math does itself. The ACR really has very little going for it comparatively.
