Weaver #90 One-Piece Scope Mount for Marlin 39A/39D

The Weaver #90 is a one-piece scope mount engineered specifically for Marlin 39A and 39D lever-action rimfire rifles. This top-mount base positions optics in the optimal position for these classic .22 lever guns, providing a solid platform without requiring permanent alterations to the receiver's factory grooves.

Constructed from aircraft-grade aluminum with a matte black anodized finish for corrosion resistance. Mounts directly to the receiver using existing grooves. Compatible with Weaver-style rings (sold separately). Allows proper eye relief for variable power rimfire scopes while maintaining clearance for the Marlin's side ejection.

• Type: One-Piece Top Mount Base
• Compatible Firearms: Marlin 39A, Marlin 39D
• Material: Aluminum, Anodized
• Ring Style: Weaver-Style (rings not included)
• Use: Rimfire scope mounting for lever-action rifles