A cheaper version of the Inokatsu CQBR gets the attention of RWTV... "Remember the Inokatsu M4? Well, Inokatsu have come out with the M4 CQB-R B-Grade Tim quickly describes its perks and flaws and also answers the frequently asked question, 'Why is it called B-Grade?' The answer comes down to a tiny hole on the side of the receiver which you may not even notice. Inokatsu reserves it's A grade nothing short of perfection. The good news is that the B-grade rating means the gun is USD 200 cheaper! Watch and you be the judge."