Bisley AB3 Arrestor & Raiser Block for Air Rifle Scopes brand_-Swanndri The lens is fully sealed

The lens is fully sealed against rain and condensation

no-nonsense set for keeping a 20 bore shotgun properly maintained between outings

A moulded base helps the pack stand correctly and hold its shape even when only part loaded

while bringing them in tighter gains height

Bisley AB3 Arrestor & Raiser Block for Air Rifle Scopes brand_-Swanndri The lens is fully sealedThe Bisley AB3, manufactured in the UK by Sportsmatch, is a dual purpose accessory for air rifle scope mounting on 9. 511. 5mm dovetail rails. Used as a raiser block, two AB3 units fit directly on to the dovetail and standard scope mounts then secure on top, lifting the sight line by 13mm to clear high objective lenses or improve cheek weld alignment. Used as an arrestor block, a single AB3 is positioned just behind the front mount on a spring piston