2 x BSA magazine sideplate screws to fit the following air rifles:

Fits:
Scorpion (All models Inc. SE and T10 T-10)
Ultra (All models Inc. SE tactical, ultramax, XL)
Hornet (All models)
Lonestar (All models)
Techstar (All models)
Goldstar SE
Defiant
Sportsman (All models inc HV)
R10 (All models Inc. MK2 and SE)
Cambridge
Bridadier

This airgun adaptor is fitted with a forster connection thread designed to fit standard quickfill connector here.