Otto Octavius
Member
- Joined
- Nov 7, 2008
- Messages
- 28
do all colt ar15 rifles have a chrome lined bore and chamber including all colt hbar (heavy barrel) model rifles, such as the colt 6600, 6721 and 6920?
thanks.
thanks.
Last edited:
Unless something has changed recently No, The Colt stainless steel match rifles are not chrome lined neither is the Colt 7.62X39 barrels. Not sure about 9mm barrels. Otherwise all other Colt AR-15 barrels use chrome lined bore, chamber. Including 6920, 6721.do all colt ar15 rifles have a chrome lined bore and chamber including all colt hbar (heavy barrel) model rifles, such as the colt 6600, 6721 and 6920?
thanks.