Is your barrel, bolt carrier, charging handle, muzzle device, or some other part of your gun giving you trouble? If one or more AR-15 upper receiver parts have become damaged or malfunctioned, opt for a superior-high-quality part from a reliable and reputable manufacturer to replace or upgrade it. If you want to replace the current upper receiver parts of your weapon with parts that will improve its performance, and enhance it, look no further than our store. When it comes to offering upper receivers and parts, we have you covered. DSG Arms provides you everything from an adjustable gas block, barrel nuts, blast shield, bolt carrier components, delta rings, complete carrier components, and so much more! We understand the importance of building an optimal weapon. Build a flawless functioning pistol or rifle by browsing through our vast collection of upper receiver parts from well-known firearm brands. Trust us; you will not be disappointed with the variety of parts from the different manufacturers we offer! More choices mean better choices!