CALIBER: 7.62 X 39
UPPER: Forged Mil-Spec with M4 Feed Ramps
SIGHTS: Flip Ups 
HAND GUARD: 7" Quad Rail
BARREL: 7" Parkerized
MUZZLE: Standard A2 Birdcage
INCLUDES: Bolt Carrier Group and Charing Handle
 
See the videos below for a complete explanation and demostration.

In Action: Mag Break Kit

In Action: LAM Single Shot Pistol in .223