Discuss rifles chambered for the 5.7x28mm; P90, PS90, and AR57.
6 posts • Page 1 of 1
Newbie here to the 5.7x28. I just aquired a AR Five Seven upper and upon looking at it, it shows patent pending on the side. Is this common, or did I ripped? Also came with magpul flip sights and 1 50 round magazine. Thanks. I'll try to post a pic soon
Thanks for the response Capt. Killer. I have night quals next week and should be able to fire off a few rounds and get back to ya. Any input ok why patent pending would be stamped on the side? Thanks
I wouldn't stress about the patent pending. Alot of companies do that so they can put out the product while waiting on the patent. My gen 2 upper has that. Works fine. Hard to say whether you got ripped off without knowing how much you paid for it, and if it was brand new or not.
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