The lightest, purpose-built, no compromise, production ultralight survival carbine just got better At only 4.6 pounds and chambered to shoot full-powered Mil-Spec 5.56 NATO ammunition, this featherweight champion just got better with newly improved components! It took years in R&D, engineering and multiple US Patents to create the most robust and reliable lightweight AR platform on the market. Building something that is not only lightweight but all the while not sacrificing strength and performance is the ultimate secret of the BATTLEARMS OIP . Every component, shy of a few detents and springs, are custom built and designed to work together as a complete system. No, you will not find a parts gun here. Every part is uniquely Battle Arms Development, Inc. The OIP utilizes a patented OIP buffer system in conjunction with a lightweight titanium bolt carrier with ArmorTi finish for durability. It is balanced with a custom mid-length gas system and a specially designed titanium THUMPER compensator. OIP defies what logic would dictate from a lightweight rifle with recoil akin to a .22LR and shooting so flat that it can be fired single-handed. It is rigorously tested and proven to run reliably even in fully-automatic fire, not just semi-auto. New in Gen 3 is the user-configurable M-LOK carbon fiber handguard and a carbon-fiber pistol grip that weighs barely one ounce. A new titanium billet CNC machined bolt catch and a RACK Charging Handle are just a couple more of the new upgrades to the OIP . The rifle was designed to be an optics-ready carbine, providing a single stretch of Picatinny rail in the optimal spot for a red dot sight while eliminating the unnecessary weight of the rail elsewhere. The patented, lightweight 7075-T6 billet aluminum receivers are not simply skeletonized and hollowed out but is carefully engineered with structural consideration. The technology and engineering that goes into the OIP Ultralight Rifle bring forth the next evolution of the AR platform.