Reply to "Question: A5 buffer system vs. 5.56/.300BLK SBR's"

There is a lot of info on the A5 system over at m4carbine.net. You might want to go over there and ask.

IDK about the different calibers, but I can tell you the H3 seems to be the most popular.

Joined: 3/27/09          Location: Back in MA for now

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