The Weaver #18 Top-Mount Scope Base (Weaver part no. 48018) is machined specifically for the Marlin 88, 89, and 98, plus the Stevens 416, giving these bolt-action .22 rifles a solid, factory-tight platform for a riflescope. Weaver cuts each base from aluminum to hold its geometry under recoil and finishes it in a black gloss that matches most factory blued receivers. Because it’s machined to the exact screw pattern of these receivers, there’s no drilling or gunsmithing involved — it bolts straight to the factory holes. This is the correct base to start with if you’re mounting glass on a Marlin 88, 89, 98, or Stevens 416 for small-game hunting or plinking.

Key Specifications

• Purpose-built to fit the Marlin 88, 89, 98, and Stevens 416, matching each receiver’s factory-drilled screw pattern.
• Listed as a 1-piece base, so a single component bridges the full mounting area.
• Positioned as the front base on the receiver for correct scope eye relief.
• Uses Weaver’s To Receiver mount style, bolting directly to the factory tapped holes.
• Finished in black gloss to match most blued rifle receivers.
• Machined from aluminum for a lightweight, corrosion-resistant base.
• Requires Weaver-style rings to complete the mount.
• Ships with rings not included, so pair it with your own Weaver-style rings.
• Cross-references as Weaver Application #18 on the brand’s official fit chart.
• Ships at a featherlight 0.0313 lb, adding almost nothing to your order.

Frequently Asked Questions

What rifles does this base fit? It’s machined for the Marlin 88, Marlin 89, Marlin 98, and Stevens 416, matching Weaver’s Application #18 listing.

Are scope rings included? No, this is the base only; pair it with a set of Weaver-style rings to finish the mount.

What finish does it come in? This base is finished in black gloss to match a factory blued receiver.

Buy the Weaver #18 Top-Mount Scope Base for Marlin 88/89/98 and Stevens 416

A correctly fitted base is the difference between a scope that holds zero and one that walks under recoil, and this Weaver #18 is machined to bolt straight to your Marlin or Stevens receiver with no modification. Order it from our Lubbock, Texas gun shop and it ships fast to your door, along with more scope bases and mounting hardware.