Hell0, I have 20 New MSAR (Made by Microtech) AR-15 Magainzes. 19 of them have a Spikes Tactical Roll Mark, 1 does not. One I have done minor filing too, does not impact the mag at all. The Bad: Will only drop free in certain lowers (I have 1 PSA it did not drop free in and 1 Andersen that it did). The person I purchased them from said that he got majority of them to drop free in Andersen/Code Red/ Surplus Arms/Rock River Arms lowers. Most of them did drop free in those lowers, a few did not. However, I need mags that will drop free in all of my lowers, not just 1 of the 2 MFG's I run, so that is why I'm selling. The Good: I'm only charging $7.50 shipped a mag if you purchase (20), or $8 shipped a mag if you buy (10) or more. If you have lowers that these will drop free in, your getting a hell of a deal. These mags are extremely well made by a very good company. Spikes Tactical is selling these at $17+shipping a pop. If you don't care about mags dropping free, even better! Just a summary of prices: (20)--$150 shipped (10)--$80 shipped (5)--$45.00 shipped Also, because I have been 100% clear and upfront about the defaults of these mags, I will NOT be refunding anyone who purchases them and gets upset that they do not drop free.