Moonie Wrote:Ok Im new to Ar so please be gentle! I just received a windham weaponary 5.56 but I would love to change the caliber to 6.5 grendal what would I have to do? Do I need to get a whole new upper or just a barrel bag and buffer? Is my lower going to accept any upper or does it have to be by windham?
Theoretically, you would need only the barrel, a Grendel II bolt (.136" deep bolt face) & magazines for the Grendel cartridge. Depending on the length of your gas system & the diameter of your gas block journal, you might need to change your gas tube & gas block. There may be other things you'll need to tweak to get your AR to shoot smoothly. If you have problems & you're not sure how to address them, just post what they are. Someone on these forums will give you the advice you need.
I refuse to be victimized by notions of virtuous behavior.