Aero Precision M4e1 Assembled Upper Receiver .300 Blackout Black - M4e1 .300 Bo Assembl Uppr Rcvr M
$554.99
From Aero Precision, the AR-15 M4E1 .300 Blackout Assembled Upper Receivers. Chambered in 300 Blackout, the upper is finished with black anodizing and available in three lengths, each with different length handguards. This upper does not come with the...