Two days ago I ordered a BCM 20 A4 Mod 1 from G&R Tactical. They're out of stock on their website but will be putting in an order for me to BCM. I plan on building an A4 clone and using the KAC M5 RAS Seconds (blemished) for my rail system. I've read elsewhere that I'll need a rifle length buffer tube, buffer, and spring. I've checked the specs on G&R's website and can't tell if it comes built that way or not. Any suggestions on how to create an A4 clone from the BCM 20 A4 would be appreciated.
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