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Weaver
Overview
The Weaver Shilen Round Receiver Aluminum Top Mount Scope Base is designed to provide a stable platform for mounting optics on your firearm. Made from durable aluminum, this two-piece base offers a matte black finish that complements a variety of builds while ensuring a secure fit. Builders often utilize this scope base for precision shooting setups where reliable optics placement is essential.
Weaver Shilen Round Receiver Aluminum Top Mount Standard Rear/Front 2-Piece Scope Base, Matte Black - 48501
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Builders have added the Weaver Shilen Round Receiver Aluminum Top Mount Standard Rear/Front 2-Piece Scope Base, Matte Black - 48501 to their builds on GunPartPicker. Since April 2026, it ranks #102 of the 418 optic mounts builders have added.
Availability is good: it was in stock at one retailer or another nearly every time we checked in October 2026, and today 7 of the 8 retailers we track have it in stock. It dipped to $4.66 at KY Gun Company for a stretch in October 2026, well under its usual $6.19, so sales do come around. Buying today, the lowest price is $4.66 at KY Gun Company, which matches the best price we saw in October.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 37 retailers
We ranked every optic mount by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Optic Mount Guide →Check it against the live catalog:
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