Hey guys, just looking to get a bit of info on the Hk Mr233rem upper receivers. I have a few questions about these uppers. Firstly, will this fit a standard colt Canada lower? Also can I shoot 5.56 out of it? And lastly, will a standard Ar bolt fit and properly operate in this upper? Thank you!
HK mr223a3 rem upper
- Thread starter jrcarbine
- Start date
polskadude
CGN frequent flyer
- Location
- London Ontario
Yes, standard lowers fit.
No standard BCG will not work, this is a piston gun, uses proprietary BCG
The barrel is made to .223 spec, 5.56 will fit, and probably fire but .223 is recommended.
No standard BCG will not work, this is a piston gun, uses proprietary BCG
The barrel is made to .223 spec, 5.56 will fit, and probably fire but .223 is recommended.
polskadude
CGN frequent flyer
- Location
- London Ontario
You could try asking North Sy..... nvm, they are nearly useless.
No, there is nowhere to get MR223A3 carriers.
Most people who buy the spare uppers already have a complete MR of a different barrel length.
No, there is nowhere to get MR223A3 carriers.
Most people who buy the spare uppers already have a complete MR of a different barrel length.
