NLX450 Bushmaster Complete Upper Convert your AR15 rifle into a hunting machine with our NLX450 Bushmaster complete upper! Now legal in the shotgun zones in Michigan, Ohio, Indiana, Iowa, and several other states, the NLX450 Bushmaster complete upper is must have for hunters. Whether you hunt deer or hogs, the accuracy and stopping power of the Next Level NLX450 cannot be beat! Because of the growing popularity of the 450 Bushmaster round, we recognized many AR15 owners only needed a complete upper for hunting a few months of the year. Our team at Next Level Armament designed NLX450 Bushmaster complete upper with top quality components to meet that demand. Combined with the best 450 Bushmaster break design on the market, we obtained incredible accuracy and range from a large caliber bullet. You won't be disappointed with your new hunting machine! Next Level manufactures all our products in house with American made materials. From our 7015 aluminum standard to our precision Aerospace machining, our quality speaks for itself. Built with the best parts on the market, our complete upper receiver comes with all the upgrades standard. Why pay less for inferior parts and pay more to upgrade later? Your upper includes the following parts: NLX556 forged upper receiver Tromix 18' mid-gas or 16' carbine gas, 1/24 twist NLX556 Bolt Carrier w/ DLC finish, Tromix .450BM Bolt NLX556 Ambidextrous Charge Handle NLA billet low profile gas block NLA 13' Mlok handguard with 16' barrel, 15' Mlok handguard with 18' barrel NLX11 450 Bushmaster brake Extra power buffer spring