This adapter is compatible with the .35/.45/50 Cal AEA Challenger “BIG BORE” (side lever model only) as well as the .357 AEA HP SS Max. #A91
*The HP SS MAX 45/50 does not need an adapter*
Features:
- M18x1 male threads
- 6061 T6 Aluminum
- Anodized
- Knurled thread protector