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Posted: 4/8/2017 11:59:56 AM EDT
| I'm converting my 5.56 build to 9mm. Anderson lower. I have a Spikes mag block, mags, 9mm buffer&spacer. Now I'm needing an upper. My preference is for PSA but I'm concerned about their caveat at the bottom of their upper ad that says something to the effect of "to be used with PSA lowers that use either Colt or Block style mags". I have Googled this to death and looked here but have come up empty on whether this system would run and am looking for feedback. My fallback is to get a JSE upper. Thanks! |
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