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AR-STONER AR-15 Build Kit with Upper Receiver Assembly 5.56x45mm NATO 18" Barrel Mid Length 15" M-LOK Handguard, Complete Lower Receiver Parts Kit, Stock Assembly 6-Position Mil-Spec Collapsible
Sold byMidwayUSA•Posted Apr 27, 2026
Compare prices for AR-STONER AR-15 Build Kit with Upper Receiver Assembly 5.56x45mm NATO 18" Barrel Mid Length 15" M-LOK Handguard, Complete Lower Receiver Parts Kit, Stock Assembly 6-Position Mil-Spec Collapsible$448.79
$527.99
You save $79.20 (15% off)
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This AR-STONER AR-15 Upper Receiver provides style, function, affordability to your AR-15. The A3 upper attaches to virtually any standard AR-15 lower receiver. Machined with M4 feed ramps, this upper features an M-Lok handguard and 4150 Chrome Moly Vanadium barrel with a matte finish to top it off. M-Lok Handguard slots allow mounting of popular M-Lok compatible accessories directly to precision cutouts and features integrated QD sling mounts with a sleek design that does not sacrifice strength
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