adattatore per visori termici thunder e ottiche 
HM-THUNDER-38A
38.1 mm to 43 mm
 
HM-THUNDER-40A 
46.1 mm to 51 mm
 
HM-THUNDER-50A
54.1 mm to 59 mm
 
HM-THUNDER-62A
61.1 mm to 68 mm