A 7.5″ upper’s a compact upper receiver assembly designed for AR-15 pistols or short barreled rifles (SBRs), featuring a 7.5 inch barrel for enhanced maneuverability in close quarters situations. It typically includes the upper receiver, hand guard, pistol length gas system, and may also include a bolt carrier group and charging handle. The 7.5″ upper works with AR-15 pistol or SBR lower receivers, compatible buffer tubes, magazines, and standard AR-15 parts, making it ideal for building or upgrading compact, versatile AR-platform firearms.
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