Pasadena, CA local pickup. Shipping also available. Receiver kit for M4/ M16 Series AEG with G&P Upper Rceciver Brand New in Box w/Colt Trademarks Package Included: - Upper/Lower Aluminum Receiver - Dust Cover Set - Bolt Cover - Metal Hop-Up Set - Receiver Pin Set - Forward Assist Knob Retails for $200+ if u can find in stock https://airsoft-shop-japan.com/g-p-gp174b-metal-frame-colt-m4a1-b-type-for-tokyo-marui-m4-m16-series-survival-game-field-custom/