A Ghost 5.56 upper typically refers to a slim, lightweight AR-15 upper assembly featuring a minimalist “Ghost”-style free-float handguard for a sleek profile and accessory mounting. Configurations vary but commonly include a 5.56 NATO/.223 barrel, low-profile gas block, gas tube, and sometimes a BCG and charging handle. Works with AR-15 lower receivers, standard AR-15 BCGs, charging handles, buffer systems, optics/irons on the top rail, and AR-15 magazines. Ideal for modern, lightweight carbine builds.
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