Hi Anthony and welcome. It you are getting frequent jams with different ammo and magazines, that would point to the firearm. I would remove the bolt carrier group, clean and lube it, clean and lube the charging handle and guide groves with a quality synthetic lubricant. This will remove any grit and reduce any cycling friction. Then retry firing. Some quality 5.56 and .223 rounds are here: budsgunshop.com/product_info.php/products_id/164991/fiocchi+556m193l+training+dynamics+5.56x45mm+nato+55+gr+full+metal+jacket+boat-tail+fmjbt+50+bx+20+cs ------------------------------------------------------------------------------ budsgunshop.com/product_info.php/products_id/125429/pmc+556m55bp+battle+pack+5.56x45mm+nato+62+gr+light+armor+piercing+lap+120+bx+5+cs -----------------------------------------------------------------------------budsgunshop.com/product_info.php/products_id/84980/hornady+.223+remington+55gr+sp+50rds ------------- Cheers and stay safe!

Definitely PMC C-Tac

Hello Anthony,
I agree with James G & Ed C. When I first read your question I was thinking the same thing...it maybe the firearm itself. The ATI Alpha Maxx is a budget-friendly, piston-driven AR-style rifle. While it's designed to be a fun and affordable platform, these have a history of issues like jams, especially if the rifle isn't properly maintained or if the ammunition isn't compatible. On the other hand, I too like Ed C, use PMC X-Tac and my AR feeds it consistently with no FTF etc. You're best bet is too wait for good deals and sales and purchase good ammo in bulk.
Hope this helps Anthony 👍🏻

Here's a reliable one!!
budsgunshop.com/product_info.php/products_id/75971/pmc+x-tac+lap+ammo+5.56+nato+62gr+green+tip+20+round+box