ATI Omni Hybrid Maxx P3P 5.56 NATO/.223 Rem. Semi-Auto AR-15 Rifle - The ATI Tactical Omni Hybrid Maxx W / M-Lok Rail is a lightweight and highly reliable AR-15 rifle chambered in the ever popular and plentiful 5.56 NATO caliber. It has a 16" barrel with a 1 in 8 twist rate that is ideal for stabilizing a full range of bullet weights while providing consistent accuracy. This version of the Omni Hybrid Maxx is optics ready and includes a 30-round magazine. The Omni Hybrid Maxx features ATI's metal-reinforced polymer upper and lower receiver. The polymer over metal inserts helps to reduce weight and increase maneuverability without sacrificing strength. The lower receiver features an over-molded metal insert, which reinforces the buffer tube housing and rear takedown pin. This allows for metal-on-metal contact with both the buffer tube as well as the rear takedown pin, delivering the strength and durability to withstand recoil and constant use. The rifle features a beveled mag well which not only looks great but also assists in faster mag swaps. The polymer outers are also very scratch and stain resistant so your rifle will continue to look good year after year. The Omni Hybrid lower has been thoroughly tested to be certain that it can withstand all kinds of harsh conditions and abuse. ATI put their receivers through a torture test that included supporting up to 250 pounds for extended periods of time and being run over by an 800-pound forklift. Through it all the test gun continued to function flawlessly and even completed a 2000-round rapid fire drill at the end of the test without a hiccup. The Omni Hybrid Maxx P3P also features the Nano Composite lower receiver parts kit which includes the hammer, trigger, disconnector, and other small components that are all made from a special patented composite material that is just as strong as metal but comes in at around half the weight. Unlike metal parts these polymer components require no lubrication, are rustproof, and are designed to last a lifetime. These fine rifles are Brand New, American Made, and carry a Manufacturer's Limited Lifetime Warranty that is considered one of the best in the business.