- 9mm upper receiver
- Mil-spec A3 upper receiver
- 4140 W.A.S.P. barrel with 1:10 twist
- Ramped 9mm bolt uses standard AR-15 / M16 hammer
- Not for use with dedicated 9mm hammer
- F marked front sight base
The Upper Complete M4LE Carbine 9mm 16-inch WASP is the right choice to convert your M4 carbine to a 9mm carbine. Since the upper is complete this is a snap on, snap off addition. It has a ramped 9mm bolt that uses standard AR-15 / M16 hammer. Not for use with dedicated 9mm hammer. Uses existing fire control, just modify the magazine well to be shooting 9mm pistol ammunitions.
SPECS: 9mm upper, Mil-spec A3 receiver, 4140 WASP barrel with 1:10 twist, Ramped 9mm bolt uses standard AR-15/M16 hammer, Not for use with 9mm hammer, F marked front sight base