Sort by popularity Sort by latest Sort by price: low to high Sort by price: high to low View: 12 24 All AR15 Parts, Lower Parts, Lower Receiver, Upper Parts, Upper ReceiverTX Arms Lone Star Billet AR-10 Builders Kit $389.00 AR15 Parts, Lower Parts, Lower Receiver, Upper Parts, Upper ReceiverAero Precision M5 Builder’s Starter Kit $294.00 Aero Precision, AR15 Parts, Caliber, Lower Parts, Lower Receiver, Manufacturer, Multi, Receivers, TypeAero Precision M4E1 – Texas Lower Receiver $124.99 Aero Precision, AR15 Parts, Lower Parts, Lower Receiver, Manufacturer, Receivers, TypeAero Precision M4E1 Stripped AR15 Lower Receiver $106.24 AR15 Parts, Lower Parts, Lower ReceiverTX Arms AR15 Anodized Magazine Catch Button $1.45 AR15 Parts, Lower Parts, Lower ReceiverTX Arms AR10/AR15 Magazine Catch Spring $0.75 Accessories, AR15 Parts, Lower Parts, Lower ReceiverTX Arms AR15/AR10 Magazine Catch $3.95 Accessories, AR15 Parts, Lower Parts, Lower ReceiverTX Arms AR15 Takedown Pin $3.95 Accessories, AR15 Parts, Lower Parts, Lower ReceiverTX Arms AR15 Pivot Pin $3.95 Accessories, AR15 Parts, Lower Parts, Lower ReceiverTX Arms AR15 Pivot & Takedown Pin Detent $0.75 Accessories, AR15 Parts, Lower Parts, Lower ReceiverTX Arms AR10/AR15 Pivot & Takedown Pin Spring $0.75 Accessories, AR15 Parts, Lower Parts, Lower ReceiverTX Arms AR15 Bolt Catch $5.45 1 2