I recently bought a preban colt sporter lightweight. While shooting today I started to get a couple failures to go into battery. After changing mags it occurred to me it was a rifle issue. Took the rifle down and found the buffer tube detent had fallen out and was behind the sear block (thanks for the sear block colt). Looking at it compared to my 6920 it appears the buffer tube wasn't installed completely causing the detent to wear through the small amount of tube holding it in place. Am I correct with that assessment? Would simply reinstalling the buffer detent and screwing the buffer tube in some more fix my issue?


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