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No, the Magpul PMAG 7.62 AICS Short Action Rifle Magazine is designed for short action AICS-spec bottom metal, not for Armalite AR-10 rifles, which use a different magazine well and magazine pattern. Here's a more detailed explanation: Magpul PMAG 7.62 AICS: This magazine is designed for bolt-action rifles with short action AICS-spec bottom metal, like those used in Accuracy International rifles. Armalite AR-10: Armalite AR-10 rifles use a different magazine well and magazine pattern, typically referred to as "Armalite B-type" or DPMS LR/SR-25 style. Incompatibility: The Magpul PMAG 7.62 AICS magazine is not compatible with Armalite AR-10 rifles because the magazine well and magazine dimensions are different. Magpul's own statement: Magpul explicitly states that the PMAG 10 7.62 AC is not compatible with semi-auto platforms utilizing SR25/M110 pattern magazines, which includes the Armalite AR-10.

Hi William and welcome. No Sir, you need an SR-25 pattern magazine and not this AICS pattern magazine. Example of SR-25 5rd magazine here: https://www.budsgunshop.com/product_info.php/products_id/85866/smith+%26+wesson+m%26p10+308+winchester+7.62+nato+5+r ------------------------------ Cheers and stay safe!