Two Neil Clague moderators, one for .177 and another for .22. Will fit all Air Arms S400/410/500/510s with shrouded barrel and removable end cap. Very effective and in very good shape. Letting go as I sold both of my Air Arms airguns. Both are 1.25" dia, .22 is 6" long, .177 is 5". Each goes for $100 to include shipping via USPS-Priority/insured. Payment via PP-F&F. Please contact me through AGN messaging. On the old "Yellow" a bunch of times, a few here. Thanks for looking.
'
'