Lightly used. The naturally tight tolerances of the prowin didn’t do my A&K sr25 any good. I tested it in my friends gun so it works in most other m4’s. I can throw in the Prometheus flat nub (already custom cut & with roller bar) and a flat hopped G&G soft green (cold-resistant) bucking for $35 shipped ~Cashapp / PayPal~ ~ $20 or $35 is shipping inclusive ~ ~No promises of my activity on here, so if I don’t respond then go ahead and text the number on my profile.