Compact Assault Rifle - 5.56x45mm NATO - USA - 950 RPM - The Z-M Weapons LR300 M/L is a compact conversion of the M16/AR15 family.  Allan Zitta has designed an entirely new upper receiver which uses an Armalite AR18 style gas piston and relocates the recoil spring over the barrel.  The latter feature allows the elimination of the M16/AR15 buffer tube, and provides the base for a folding stock.  The resulting product is more compact and reliable than the Colt Commando. ©D.E. Watters