APS Upper And Lower Receiver Set for APS ASR M4/AR15 AEG

This Upper and Lower Receiver Set is an original replacement part for the APS ASR series M4/AR15 AEGs but may also fit other gearboxes, though it may require modification. The set includes an alloy upper and lower receiver, a bolt catch, charging handle, a magazine release, trigger guard, a steel dust cover and steel body pins. If you are building a spare upper for your APS ASR AEG this would be a perfect fit, but could also be used to add a touch of metal to a polymer M4/AR15 as long as you are okay with potentially undertaking modifications.