Holosun 407/507K Adapter for FN509 .35 Air and button placement cater to

and button placement cater to both bare-handed and gloved operations

5mm) and aluminum stake (8" threaded)

this remarkable air rifle is engineered to deliver an unparalleled shooting experience

Illumination is provided for low-light scenarios

The advanced design is optimized for both pellets and slugs

Holosun 407/507K Adapter for FN509 .35 Air and button placement cater toThe Holosun K FN509 adapter plate is a precision machined mounting solution designed to fit Holosun 407K and 507K series reflex sights to FN509 pistols. This adapter plate provides a secure, reliable mounting platform for your compact optic. Precision Fit Engineered specifically for compatibility between Holosun K series compact reflex sights (407K and 507K models) and FN509 pistols, this adapter ensures proper alignment and a rock solid mount for