$33.99
Rainbowimaging Pro M42(42mm) to M42 lens Focusing Helicoid Adapter, 15mm - 26mm
$17.42
Dorian Tool ER25NTS42 Standard Nut for ER25 Ultra Precision Collets, M32 x 1.5 Thread, 42mm Diameter x 20mm Height
$46.54
42mm x 1.5 Metric Right hand Thread Die M42 x 1.5mm Pitch
$395.00
Reflex 6.5 Moa Dot Reticle (With M16/Ar15 Top Of Handle Mount), Amber, 42mm