Available to order $375 Aero M4E1, Complete Lower Receiver, Semi-automatic, 223 Remington/556NATO, Magpul STR Stock, Magpul MOE Grip, Anodized, Black APAR600103
Available to order $297.3 Aero M4E1, Complete Lower Receiver, Semi-automatic, 223 Remington/556NATO, No Stock, A2 Grip, Anodized, Black APAR600112
Available to order $434 Aero M4E1 Complete Lower Receiver w/ MOE Grip & UBR GEN2 Carbine Stock - Anodized
Available to order $292.5 Spike's Tactical Lower, Color Filled, Semi-automatic, 223 Rem/556NATO, Black Finish, 6 Position Collapsible Stock, Mil-Spec Buffer Tube, ST-T2 Tungsten Heavy Buffer STLC200-SBS-CFS
Available to order $115 Spike's Tactical STLS018 Spider Fire/Safe, Stripped Lower, Semi-automatic, 223 Rem, 556NATO, Black Finish, ST-15 with Fire/Safe Markings STLS018
Available to order $300 Spike's Tactical ST-15 Complete Lower, w/ Collapsible 5 Position Stock, Mil-Spec Buffer Tube, ST-T2 Buffer
Available to order $333 Aero M4E1 Complete Lower Receiver w/ Strike Industries & Fixed Carbine Stock - Anodized
Available to order $115 Spike's Tactical STLS033 Waterboarding, Stripped Lower, Semi-automatic, 223 Rem/556NATO, Black Finish, Non-Color STLS033
Available to order $405 Spike's Tactical STLB200, Gen 2 Billet Lower, Semi-automatic, 223 Rem/556NATO, Black Finish, Includes All Small Parts Except Fire Control Group STLB200
