+1-800-504-5897 Help Center Check Order Status
About Us Policies Reviews How To
Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

  • Entire Store
  • ...
  • Apparel & Footwear
  • Astronomy
  • Everything Else
  • Eyewear
  • Hunting Gear
  • Lab Equipment
  • Military Gear
  • Outdoor Gear
  • Photography Equipment
  • Police, EMS & Fire
  • Shooting
  • Sport Optics
  • Sports & Hobbies
TIP
Shopping Cart

Obsidian Arms Sig Sauer P320 Full Size Guide Rod Up to 31% Off, Coupon Available — 2 models

Obsidian Arms Sig Sauer P320 Full Size Guide Rod, Stainless Steel, OA-P320-GRFS-SS
Obsidian Arms Sig Sauer P320 Full Size Guide Rod, Stainless Steel, OA-P320-GRFS-SS
Obsidian Arms Sig Sauer P320 Full Size Guide Rod, Black, OA-P320-GRFS-BLK
Obsidian Arms Sig Sauer P320 Full Size Guide Rod, Black, OA-P320-GRFS-BLK
Obsidian Arms Sig Sauer P320 Full Size Guide Rod, Stainless Steel, OA-P320-GRFS-SS
1 of 4 images
Obsidian Arms Sig Sauer P320 Full Size Guide Rod, Stainless Steel, OA-P320-GRFS-SS
Obsidian Arms Sig Sauer P320 Full Size Guide Rod, Stainless Steel, OA-P320-GRFS-SS
2 of 4 images
Obsidian Arms Sig Sauer P320 Full Size Guide Rod, Stainless Steel, OA-P320-GRFS-SS
Obsidian Arms Sig Sauer P320 Full Size Guide Rod, Black, OA-P320-GRFS-BLK
3 of 4 images
Obsidian Arms Sig Sauer P320 Full Size Guide Rod, Black, OA-P320-GRFS-BLK
Obsidian Arms Sig Sauer P320 Full Size Guide Rod, Black, OA-P320-GRFS-BLK
4 of 4 images
Obsidian Arms Sig Sauer P320 Full Size Guide Rod, Black, OA-P320-GRFS-BLK

Tap Tap to Zoom

Government Export Restriction Government Export Restriction
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
View All Q&A You Have a Question? Ask!
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

Up to 15% OFF Gun Parts

See promotion details.
Eligible models will have a savings offer. Apply coupon and add the item to your cart for savings on that select model! Limited time only. Cannot be combined with other promotions or offers.
In Stock
2 Models Available

Show with deals only:

Coupon Available
Color
All
Finish
All
Search

made-in-usa-flag Made in USA

Help support American manufacturing! Marked models of this product have gone through rigorous review and been certified by the manufacturer as Made in the USA.

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

What firearm models does the manufacturer say Obsidian Arms Sig Sauer P320 Full Size Guide Rod is compatible with?

The manufacturer suggests that Obsidian Arms Sig Sauer P320 Full Size Guide Rod is compatible with SIG Sauer P320 Full Size

Obsidian Arms Sig Sauer P320 Full Size Guide Rod Orderable Models

List of Orderable Models

  • 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
  • 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
Compare (0)
1 item has been added
Add at least two items to compare
Last updated 2026-07-07 UTC.