Standard markings and features on the post-2006 production lower receiver, with a proprietary buffer system and spacer for the included upper receiver installed in the buffer tube. The Lakeside Machine L.L.C. Razorback belt fed upper receiver features a Noveske KX5 flash suppressor on the barrel, quad free floating Picatinny handguard, left-side feeding Browning M1919 style belt fed action (advances belts through to the right side while ejecting casings downward through the lower receiver magazine well), Picatinny rail mounted behind the top cover, and the model, caliber, and manufacturer information marked on the right side of the receiver behind the charging handle slot. Fitted with Picatinny adapting folding winged post front and ill-fitting adjustable peep rear sights, FAB Defense grip-pod, A2 pattern pistol grip, and Rock River Arms M4 pattern six-position telescoping buttstock. Includes a generic Bushmaster hard case, six cloth .22 LR belts with starter tabs, four bags of polymer disintegrating .22 LR links, belt loading tools, two incomplete carry handle attachments, two Lakeside Machine polymer .22 LR belt boxes (adapter needed to attach boxes to gun not included), and a spare "TIPPMANN/VINDICATOR/LM7" marked recoil and firing pin spring set.