This video details how to upgrade a Smith & Wesson M&P Sport AR-15 for under $500, focusing on improving shootability and ergonomics. Key upgrades include an AT3 2-stage trigger, H2 buffer, and flat wire spring for performance, alongside a UTG quad rail, Magpul grips, and an AT3 LPVO for enhanced handling and versatility. The build prioritizes functional improvements over purely cosmetic ones, demonstrating a practical approach to modernizing a budget rifle.
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