AR-15 Left Handed Slick Side Billet Upper Receiver

The NBS Left-Handed Slick Side Billet Upper Receiver is a quality, American made billet upper featuring a unique design that sets it apart from traditional forged upper receivers. Manufactured to exacting standards on five axis CNC machines from a solid block of aircraft grade aluminum, this stripped upper not only looks good... it is built to last. Compatible with mil-spec forged lower receivers and most billet lower receivers .250 takedown / pivot pin holes No forward assist Weight: 7.1oz *Does not come with anti-rotation pin for use with NBS Free Float M-LOK Handguard and Dirty Bird Gen 2 Handguards. Anti-rotation pin can be found below: 98381A470 - NBS/Dirty Bird Gen 2 Handguard Anti-Rotation Pin - AR15Discounts Made in the USA Backed by the NBS Limited Lifetime Warranty