- What kindof accuracy can I expect out of them? 2. Will the magpul moe handguards fit with no modification?
There are a lot of variable here. Some of them are:
- Quality of the ammo
- Twist rate of said ammo
- Optic choice
- Trigger choice
- Shooters ability
Assuming all the best options are chosen and you can shoot well, the uppers will do everything from .75-1.5.
If this was their hammer forged upper, then I would say that .50-1 would be normal.
C4
This has been done. Either question can be answered by searching existing threads, though unaddressed questions may be posted similarly existing threads.
Search button in thread header: https://www.m4carbine.net/search.php?searchid=3489931
Orange Search button in page header: https://www.m4carbine.net/gtsearch.php?cx=003496919632624929056%3Adhiwgm0hbaa&cof=FORID%3A10&ie=UTF-8&q=midlength+BCM&siteurl=www.m4carbine.net%2Fsearch.php%3Fsearchid%3D3489931#981