The Odin Works LR-308 Upper Receiver Assembly is built on a forged upper and designed to work with DPMS Gen1 pattern lowers, this complete upper is ready to enhance your shooting experience. The 22" stainless steel barrel features a Tactical Match style profile with an XL Rifle gas system and the 1 MOA guarantee. The XL rifle system is 2" longer than rifle length and handles high pressure cartridges without issue. The included BCG features a black nitride finish and is considered multi caliber, another high pressure feature. Add in the famous ODIN adjustable gas block and you have a setup that is going to work and shoot really well. FeaturesForged upperODIN 22" Tactical Match XL Rifle 6.5mm Creedmoor barrelXL Rifle Gas systems are 2" longer than standard rifleODIN Adjustable gas blockODIN AR10 17.5 O2 Lite M-LOK Forend with accessory railODIN AR10 Multi Caliber BCG with Black Nitride finishODIN eXtended Charging HandleODIN Thread protector