• This OG colt upper has been anodized so many times it's lost dimension - it's OUT OF SPEC
• NO REFUNDS - I'm selling this as a non working display upper because:
- Over size roll pin needed for forward assist
- Bolt Carrier May not cycle due to front lug moves too much, it moves ALOT
DO NOT INSTALL AND TRY TO SHOOT unless you know how to rig it up? I suggest using for
NO REFUNDS
NO WARRANTY
DONT SHOOT WITH IT!