I have one YHM-9627 front rail mounted sight.
The YHM thumbscrew was replaced, after it sheared its head, with a stainless steel allen head screw for more secure attachment. It’s in good condition, though not new.
I have one GG&G A2 Rear BUIS. It is used but in very good condition.
YHM-9627 –> $65 Shipped to Lower 48 via USPS
GG&G A2 BUIS –> $90 Shipped to Lower 48 via USPS
