FN “Guardian” upper / Aero M4E1 lower 5.56 near South Milwaukee, Milwaukee, WI

FN Guardian type upper AR chambered in 5.56 with an Aero M4E1 lower. 

FN 5.56 16" CHF barrel , FN Guardian contract over run handguard and receiver. Aero gas block and gas tube.

Aero M4E1 lower with PSA parts kit and Magpul stock

30 rds through the barrel

$700

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