Built her on Friday and tested at the range on Saturday to test and zero optic. Gun runs flawlessly with all types of ammo including hollow points but having trouble with LRBHO working, thinking I might have to switch out the upper receiver for something more compatible for LRBHO.

LOWER

• Angstadt Arms 0940 Lower Reciever
• Maxim Defense Gen6 CQB Brace with Pistol Caliber Buffer System
• Rise Armament Rave PCC Trigger
• Geissele Maritime Bolt Catch
• Timber Creek Greyman Safety Ambi Selector
• Geissele Takedown pins
• LWRC Grip (from my LWRC AR15)

UPPER

• Grid Defense Vital 7.5” Barrel Upper Receiver
• Angstadt Arms 9mm BCG
• Breek Arms Sledgehammer Charging Handle (Suppressor coming soon)
• Primary Arms SLX 1x Prism 9mm
• Olight Odin S Mini (Possibly Switching to a Streamlight Protac)
• BCM Mod 3 Vert Grip

Finally got all the parts in the mail and started working on the upper this morning, noticed a small gap between the barrel and BCG and wondering if this is something I should be concerned about before I test it at the range tomorrow.