I actually own a CA SCAR Sportline, and the only issues I've had with it so far was with a crappy battery (it was free on purchase, bought a couple of proper ones to replace it, no worries since) and a bit of cracking at the folding stock because of abuse.
It shoots fine, a hand-sized cluster on a target about 30-50 feet away (wasn't measuring) at full auto. Seems like an appropriate grouping, since it is a CQB model. And yes, I do have a scope for it, a 4x magnification ACOG.
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