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The Aero Precision M4E1 Complete Lower Receiver with Magpul SL-K Carbine Stock is the perfect upgrade for your AR build. This complete lower features an M4E1 Lower and is upgraded to include an Magpul SL-K Carbine Stock. A drop-in replacement buttstock for AR15/M4 mil-spec carbine buffer tubes, the SL-K™ is designed for compact PDW style weapons or users desiring a small and light stock.
INCLUDES:
M4E1 Lower Receiver
Magpul MOE Grip
Magpul SL-K Stock
Lower Parts Kit
Carbine Receiver Extension
AR15 Carbine Buffer and Spring