All AR-15 Overstock AR-15 upper assemblies & upper parts offer superior quality, dependability, and performance. AR-15 Overstock manufactures and retails a large selection of AR-15 upper parts – from stripped to complete uppers & barrels to rails, AR-15 Overstock has what you’re looking for. Better yet, All AR-15 Overstock AR-15 upper assemblies are custom built to order enabling us to provide you with the best prices you will find anywhere. The quality of our AR-15 Upper Parts are backed by our Lifetime Warranty – if any AR-15 Overstock upper assembly becomes defective, we will repair or replace it at no charge. Get all of your AR-15 uppers at AR-15 Overstock today!