If you plan on getting mag extensions, especially the taylor freelance goliath, the factory ammo you use will have to be on the short side. I have a ton of the blazer stuff but its oal is too long for the mag extensions I have, so it doesnt feed reliably in my cmmg guard. I bought the bolt, barrel, upper and lower all for the guard so it's technically a Franken guard but it's basically all cmmg parts except the handguard,trigger,and stock.
I hand load for the guard now but the only factory ammo I could get to feed reliably with those mag extensions was Remington umc.
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