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ATIGOMX556MP460: Features a fully-patented metal reinforced polymer upper receiver along with a fully-patented metal reinforced polymer lower receiver. The Omni Hybrid lower features a patented hammer and trigger pin retainment system, preventing movement from the hammer and trigger pin during firing. The Omni Hybrid also features our patented over-molded metal inserts, which reinforce the buffer tube housing and rear takedown pin as well as reinforce the front takedown pins. This allows for metal-on-metal contact with both the buffer tube as well as the rear takedown pin, thus increasing strength and durability from recoil and consistent firing.
The P4B also features a revolutionary Nano Composite Parts Kit. This kit includes the hammer, trigger, disconnector, takedown pins, safety selector, magazine release, and detents, all made from nanocomposite material that is just as strong as metal components but at only 1/2 the weight. A patented Omni Hybrid receiver set along with front and rear metal inserts. The 7.5" 1:7 twist nitrided 5.56x45mm barrel is a beast at shooting both .223 Remington and 5.56 NATO rounds. That is covered by a 7" aluminum M-Lok rail ready for all your favorite attachments. The pièce de résistance of this awesome AR-15 pistol is the 60-round extended magazine that accompanies this firearm. This is a recipe for an awesome day at the range!