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American Tactical Imports
Overview
The ATI Alpha Maxx Stripped Upper Lower Receiver Set is a foundational component for your AR-15 build, providing the essential framework for assembly without any pre-installed parts. This stripped set allows builders the flexibility to customize their firearm according to their specific needs and preferences. Commonly, this receiver set is found in builds utilizing a mid-length gas system and chambered in 5.56 NATO, making it a versatile choice for those looking to optimize their AR-15 for performance and reliability.
ATI Alpha Maxx Stripped Upper Lower Receiver Set ranked #195 of the 507 lower receivers builders added on GunPartPicker in August 2026. Builders have been adding it to their builds on GunPartPicker since February 2026. All time, it ranks #211 of the 993 lower receivers builders have added.
It was out of stock everywhere we track for all of August 2026, and today the one retailer we track is out of stock. Listed prices start at $57.29 at BattleHawk Armory for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 35 retailers
We ranked every lower receiver by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Lower Receiver Trends →Check it against the live catalog:
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