5.56
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| Aero Precision M4E1 16" 5.56 Mid-Length Barreled Upper Receiver | AR15 Enhanced 16" 5.56 Complete Upper Build Kit | Aero Precision M4E1 Threaded 16" 5.56 Mid-Length ATLAS Upper |
$474.99 $349.00 | $795.00 $469.00 | $514.99 $419.00 (1) |
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| Aero Precision M4E1 16" 5.56 Mid-Length Barreled Upper Receiver | Aero Precision AR15 16" 5.56 Mid Upper COMPLETE with BCG + CH | |
$499.99 $395.24 (1) | $474.99 $399.00 | |
