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problems with 5.45x39 Upper

2K views 27 replies 9 participants last post by  Bolt2Bounce2 
#1 · (Edited)
About 4 mos ago I purchased a Smith and Wesson M&P 5.45x39 AR upper.Installed the supplied x heavy hammer spring. From the beginning, I had light primer strikes/failures to fire on military surplus ammo both Bulgarian and Russian. It fired about 80% on comercial ammo.I ordered a wolf extra power hammer spring with no change in result. Took it to a local gunsmith and he sugested the chamber was cut too deep. I called customer service and sent it back to S&W with a letter outlining the failure to fire issue. It was sent back to me with a used scratched and scribed on(with no of rnds and lines) shop mag stating the failure to feed issue was resolved new mag........Hmmmm So I called Customer service again a shipping label was sent and off it went again on nov 4.after 2+ weeks of leaving messages for the customer service rep i've been dealing with, I recieved a return call from S&W today....They now state they test fired it and there is nothing wrong with the upper I must have an issue with my lower??? Really?? It functions flawlessly with two different 5.56mm uppers,a 7.62x39 upper and 6.8 upper but not thiers. anyone else had issues with S&W service any suggestions??? I'm likely replacing the barrel unless someone here has a better idea...Anybody got anything?:thankyou:
 
#28 · (Edited)
What an interesting conversation with the tech dept at saami. apparently there is no saami spec on the 5.45x39.... I can't believe that kay or kate gave me such a lame brush off answer......WTF
That is what I said... NO saami.. I'm glad you are being pro active.. it will help the next guy out.. when they have a problem.. S&W may not have done any tests on it.. They don;t make the AR.. they are subcontracted.. I have heard about a kimber rifle that was sent to a retailer in Canada, with a test target... and it's barrel was unchambered... never reamed for a chamber.. WOW... B2B
 
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