It measures 0.160", I bought it off of Amazon.com for $26.64 including the free shipping. The number on the box says its a GL2006 for all Glock models except for compensated or ported models. Hoping to go to my buddy's little range out back of his house, but he has an all weekend wedding to go to, so the wife is talking to him at work about just the two of us going down and plinking a bit, she is wanting to shoot some more, lol!