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View Full Version : Can ALL CMMG 9mm uppers use the standard 556 hammer


supermario
09-27-2009, 12:16 AM
I understand that CMMG have special BCG and they dont need a 9mm hammer, well are all of their 9mm uppers built like this or do some need the
9mm hammer, perhaps the older models? Anybody know? Thanks

NSR500
09-27-2009, 12:37 AM
With older CMMG 9mm uppers you will have to verify if they have been fitted with the new BCG. All the new mfg 9mm CMMG uppers are supposed to have the new BCG.
With the new BCG you can use your stock hammer.

supermario
09-27-2009, 1:15 AM
Oh ok, thanks.