Maintain an M4 or M4A1 Carbine Reviews
Summary – Inspect for Serviceability
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&pageText=To properly inspect the M4 or M4A1 carbine, you must perform the following procedures:&
&bulletText1=Inspect upper receiver group&
&bulletText2=Inspect lower receiver group&
&bulletText3=Inspect bolt carrier group&
&bulletText4=Report and turn-in unserviceable parts to maintenance&