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Questions & Answers
How does the spring stay in place on the Guide Rod without a beveled end on the front of the rod? How does the spring stay in place when installing?

Barrel in slide. Spring on rod. Stick spring into recess, push on rod, put in grove under barrel.

by Joel, Verified Owner, January 6, 2023
Customer Reviews
Most Recent Reviews
Nice upgrade by Major Wood, Verified Owner, December 15, 2023
This makes the Sig M17 or P365 more tunable like a 1911. I haven't got to shoot it yet, but am impressed with the fit and function during dry fire practice. I can't wait to see how this improves my follow up shots at the range.
Most Recent Reviews
Great Product by David Alford, Verified Owner, July 18, 2020
Product was shipped in a timely matter first and foremost. It’s ver well constructed, very high quality and performed very well. Very happy that it was black in color to match the barrel and my firearm’s 2 tone look. Installed fairly well also.
Read All 2 Reviews
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Product Info for Obsidian Arms Sig Sauer P320 Full Size Guide Rod

With professional shooters in mind, the Obsidian Arms guide rod is made from high quality stainless steel that has been hardened and polished for the best wear resistance and smooth cycling. Weighing in at 1.4oz the additional weight compared to the factory spring assembly will provide better muzzle control and less flip when firing. With your preferred 1911 springs you will be able to tune your P320 to the most optimal recoil for your chosen load. We recommend starting with a 15lb spring.image

Specifications for Obsidian Arms Sig Sauer P320 Full Size Guide Rod:

Manufacturer: Obsidian Arms
Fabric/Material: Stainless Steel
Gun Make: SIG Sauer
Gun Model: SIG Sauer P320 Full Size
Model Generation: 1
Length: 3.8 in
Weight: 1.4 oz
Condition: New
Country of Origin: USA

Features of Obsidian Arms Sig Sauer P320 Full Size Guide Rod

  • High Quality Stainless Steel
  • Compatible with 1911 springs
  • 1.4oz (a spring adds about 0.2oz)
  • Only Fits Sig Sauer P320 Full size pistols
  • Does NOT function in Carry, Compact, Subcompact, or X5 models
  • Works with round wire springs, does not work with flat wire springs

Package Contents:

  • Obsidian Arms Sig Sauer P320 Full Size Guide Rod

Obsidian Arms Sig Sauer P320 Full Size Guide Rod Orderable Models

List of Orderable Models

  • Obsidian Arms Sig Sauer P320 Full Size Guide Rod, Black, OA-P320-GRFS-BLK , MPN: OA-P320-GRFS-BLK , UPC: 850011609286 , Code: OB1-FGR-TJ93E-OA-P320-GRFS-BLK
  • Obsidian Arms Sig Sauer P320 Full Size Guide Rod, Stainless Steel, OA-P320-GRFS-SS , MPN: OA-P320-GRFS-SS , UPC: 850011609279 , Code: OB1-FGR-TJ93E-OA-P320-GRFS-SS
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