UPK-D4 Eclipse Traditional AL with 1913 Rail Mount BUNDLE

$149.95 $220.00

BUNDLE Package

This UPK-D4 Eclipse has a Type III Hardcoat 7075-T6 Aluminum Blade and Traditional Handle and comes with a 1913 Rail Mount

A minimal guard version of the Pocket Sai. The guards have been reduced to a minimum amount necessary for blade retraction.

  • Bayonet Defensive Implement
  • The Eclipse Offers Self-sheathing making it a retractable Bayonet
  • Retractable Blade automatically Locks at either position (open/closed)
  • NOT Sharpened, not double-edged (A knife having dual effective cutting edges)
  • Please see The D4T or D4 SS knives for doubled-edged options.

What’s included?

x1 UPK-D4 Eclipse Traditional AL 

x1 1913 Rail Mount

Material Specifications:

  • Blade Milled from 7075-T6 Aluminum
    • Hardcoat Type III Anodized
    • 80 ksi Tensile Strength
  • Traditional Handle Milled from 7075-T6 Aluminum
    • Hardcoat Type III Anodized
    • 80 ksi Tensile Strength
  • 1913 Rail Mount from 7075-T6 Aluminum
    • Hardcoat Type III Anodized
    • 80 ksi Tensile Strength
  • Custom Button made in Aluminum
    • 7075-T6 Aluminum with Black, Crimson, or Gold Hardcoat Type III Anodize
  • Custom Screws made in 450 Stainless steel
    • Heat Treated by Age Hardening to the H900 condition HRC 45
  • 301 Stainless Steel Springs
    • Cold work Hardened to a Spring Temper


  • Extended length: 11.7 inches (297 mm)
  • Collapsed length: 7.3 inches (186 mm)
  • Weight: 3.8 oz

Important Read:

7075-T6 Tempered Aluminum is a lightweight aluminum with steel like strength, one of the strongest Aluminum alloys available with a tensile strength as high as 80ksi.  The Hardcoat Type III Anodize provides a resilient protective surface.

Customer Reviews

Based on 1 review
Baddie Stabbie

I can't find anything i don't like about this bundle. First of all it is really easy to set up and install, a caveman can do it. It is purpose built, and the design is pure genious. If i was the designer, I would have made it just a little longer, mostly because i like stabbie things. I was way to excited when i ordered mine to notice that there was an option for sharpened edges, my next order will rectify that issue. My next one will also be stainless steel which i also did not realize was a thing until the next day. Thank you so much for the coolest thing Ive put on my rifle in quite a while. P.S. I will be sending you 20 or so more friends orders "tout suite".

Thank you so much for your review I'm ecstatic and thrilled you're happy with my design Thank you for your support
-John Risch UPKnife