Hi Eric and welcome back. The ATIGAX5567MLB60 has a Polymer Upper and Lower with reinforced metal inserts at key stress points. would go with the Aluminum Upper/Lower model TIG15MS556ML7BL for longer life/durability over the long haul. Radical also has nicely built AR Pistols at great price points; - budsgunshop.com/product_info.php/products_id/182593/radical+firearms+fp75556m47rprbmpsb+5.56x45mm+nato+7.50 --------- Cheers, stay safe and enjoy!

Good evening to you!! The upper and lower are made from polymer with metal inserts. I myself would steer clear of it. For a few dollars more you can get the below listed firearms. Hope this helps. Have a good rest of your day.
🇺🇸🇺🇸 'Merica' 🇺🇸🇺🇸
budsgunshop.com/product_info.php/products_id/150667/radical+rf-15+socom+5.56+nato+ar-15+w15+rpr+rail --
budsgunshop.com/product_info.php/products_id/95081/ruger+ar-556+ar-15+5.56+nato+16.1+semi+auto+rifle+30+1 --
budsgunshop.com/product_info.php/products_id/162861/smith+wesson+mp+15+sport+iii+5.56x45+nato+16+barrel+15+m-lok+handguard+30+1 />

Definitely better options. Try a reliable brand like Ruger, S&W, Colt, etc.

Polymer lower and upper. I wouldn't trust it. Far better options out there. Try any of the well known brands such as Ruger, Colt, etc.

The ATI Alpha Maxx (ATIGAX5567MLB60) 7.5" AR-15 pistol is considered a budget-friendly, entry-level option, often found for $350–$400, making it worth the price for casual, recreational shooting. Its primary appeal is extreme light weight due to a polymer upper and lower, though this raises durability concerns for high-volume use compared to metal alternatives.
Pros: Very affordable (often on sale for $sim$$350), lightweight, includes a high-capacity 60-round magazine, features a pinned gas block.
Cons: Polymer receiver and, in some cases, trigger group may not hold up to heavy, long-term duty use. 7.5-inch barrel is extremely loud and produces significant flash.
Verdict: Good for a "range toy" or budget-conscious beginner, but not recommended for duty or serious self-defense; experts suggest higher-tier brands for reliability.