Maintain an M4 or M4A1 Carbine Reviews
Inspect Lower Receiver Group
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<img src="../../images/a392p0150s02p0010.gif" width="760" height="445" border="0">
&pageText=To inspect the lower receiver group of the M4/M4A1 carbine for serviceability, these components must be inspected:& &label1=Trigger mechanism& &label2=Bolt catch& &label3=Magazine release button& &label4=Buttstock assembly& &label5=Action spring and buffer& &popText1=Start by checking the trigger mechanism for missing or damaged parts.& &popText2=Check the bolt catch for free movement. & &popText3=Check the magazine release button for free movement.& &popText4=Check the buttstock assembly for dents and rust and ensure the proper operation of the retaining nut and lock-release lever.& &popText5=Check the action spring and buffer for damage.&
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