$pend it on something else! - Presma Skeletonized AR Mil Spec Buttstock

I was excited to get this to add to a plinker 9mm build. It does fit on to a milspec buffer tube but will not collapse all the way. It seems the inside diameter is not consistent throughout. I tried adding some wd40 to the buffer and giving it a push bur them realized the silver “finish” was coming off on the tube. Got this thing stuck so tight I had to put into a vise and knock it with a block of wood. I’ll stay away from this brand for any parts. If machining is this poor for a stock I wouldn’t put anything into a real hammer.