Discussing the major differences between the European HK MR223A3 and the HK USA MR556A1.
Timestamps
0:00 - Introduction
1:02 - Buffer tube
2:28 - Upper and lower receiver
4:43 - Barrel extension pin
5:20 - Differences from HK416A5
6:12 - Barrel
7:57 - Furniture differences
9:01 - Conclusion
Links
https://youtu.be/U7sUkNyaE3E