FX Impact diagrams + O rings

FX Impact O ring kits sell for a small fortune online. Order them from a reputable O ring supplier and you'll have a lifetime supply of replacement O rings for less than a single O ring kit might cost.

Clicking the part number takes you to oringsandmore and you can order the O ring from there.

FX Impact list of O rings

Part # O rings and more Notes
Barrel and Shroud
A2-.1774.315MMB70.177 only
A2-.225515MMB70.22 only
B2-.256413MMB70.25 only
B2-.307515MMB70.30 only
A3102MMB70
A6/B612045
A9251.0MMB70
A13117
A172025MMB70
Action
A61415MMB70
A18915MMB70
A252.21MMB70
A27X363262
A30101MMB90
A31290178MMB90
B23X284262
B24915MMB70
B2761MMB70
B28/C3821MMB90
B291052MMB70
C3006B90
C33/C35415MMB70
C39915MMB90Until serial #183534
C391015MMB90 After serial #183534
C41766178MMB70Until serial #183534
C41752MMB70After serial #183534
Impact X752MMB70Impact X regulator house*
Impact X1015MMB90Impact X trigger house*

* Impact X regulator is slightly larger than non X, so it needs different O rings.

Sources

Information mostly compiled from airgunnation post, but also emails to FX. Post on airgunnation thread if something is off.