Block Mount Top Picatinny "diving board" – Model 400-885
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Block Mount Top Picatinny "diving board" – Model 400-885

Zero Compromise Optic Block Mount Top Picatinny Cap – Model 400-885

A precision-engineered accessory designed to elevate the modular capability of ZCO block mounts. This top Picatinny cap attaches to compatible ZCO block mounts and provides a secure platform for mounting micro red-dots, laser range-finders, or other optic-mounted tools.


Key Features:

 

  • Purpose-built to interface with ZCO block-mount systems (e.g., the “Block Mount” family) and permit mounting of additional accessories on top. 

  • One-piece Picatinny rail cap machined from high-strength material for rigidity and durability under recoil and field conditions. 

  • Available in multiple finishes (Matte Black, Flat Dark Earth) to match your rifle system’s aesthetics. 

  • Seamless integration with the ZCO block mount height and geometry ensures proper alignment and co-witnessing when using optic tools.

 


Why Choose Model 400-885?

If your precision-rifle or tactical platform uses a ZCO block mount and you’re looking to add an accessory on the top rail for micro-optics or laser/IR gear, this Picatinny cap is the optimal choice. Its build quality and system integration ensure that you’re not adding weak links in your optic mount stack.


Ideal Use Cases:

 

  • Precision bolt-rifle setups where scope + red-dot co-witness is desired

  • Tactical platforms where supplementary aiming or ranging devices are mounted atop the primary optic

  • Builds requiring color-matching (FDE or Black) with chassis or rail systems

  • Situations where modularity and repeatability of optics and accessories matter

 

Installation Notes:

 

  • Confirm your existing ZCO block mount is compatible with the cap (manufacturer catalog lists 400-885 as the correct SKU) 

  • Clean mating surfaces, ensure proper torque on fasteners to manufacturer specs to avoid shift under recoil

  • After installation, verify accessory alignment and zero-offset (if applicable) to maintain repeatability

  • Re-check torque after initial firing session to confirm no settling occurred

 

 

$215.00

FAQs

No. We only sell and ship within the United States.

Warranties from the manufacturer are the customers responsibility to maintain. You will receive three emails from us after your purchase: A confirmation that serves as your receipt. A shipment notification with tracking details, and when applicable a third email with your item(s) serial number(s) for warranty purposes.

If you are a professional end-user, please contact us about exclusive pricing and product options that may be available to you.

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