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Questions & Answers
Can't tell from pic but was wandering what part are iodized in the desert dirt color?

Trigger guard and safety selector

by KC, Verified Owner, August 12, 2021
It says that all key components are stainless steel, what parts are not stainless? Expert Answer

I would recommend reaching out to Geissele directly as they do not provide specific material specifications for each individual component. Their contact info can be found linked below:
https://geissele.com/contact/

by Ethan, Gear Expert, August 23, 2022
Customer Reviews
Helpful Positive Review
lower parts kits by Hoythunter1, Verified Owner, September 12, 2024
Quality amazing. They say lower parts are all the same and that is simply not true. This is an amazing lower parts kit
1/1 found this helpful
Helpful Positive Review
Perfection and reliability always by Brian Soles, Verified Owner, September 12, 2024
Like with every product I’ve purchased from Geissele the quality control is A-1 along with build quality and reliability
1/1 found this helpful
Helpful Positive Review
great quality by Garrett Slavik, Verified Owner, October 6, 2024
High quality parts that you expect from geissle. Perfect parts kit for your ar project
1/1 found this helpful
Helpful Positive Review
Coiled Pins are a bit Tight by Dee, Verified Owner, November 8, 2024
These parts are all excellent quality. I used them on a Geissele lower so I thought they would fit flawlessly. However, the included coiled pins are slightly oversized. They do fit but cause a bit of scuffing fitting them into place. I’m building a g...
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1/1 found this helpful
Helpful Positive Review
always quality with geisslee by JP, Verified Owner, August 11, 2024
Best parts kit for customization being you get to choose your own grip and trigger. You can never go wrong with geissele
1/1 found this helpful
Helpful Positive Review
great products by jordan, Verified Owner, May 19, 2024
My new favorite website, has alot of items i cant find anywhere else
1/1 found this helpful
Read All 57 Reviews

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Product Info for Geissele Ultra Duty Lower Parts Kit

Use the quality components included in this Geissele Ultra Duty Lower Parts Kit to build a more reliable weapon that will last significantly longer than with stock parts. All key components of these Geissele AR15 Lower Parts are made from stainless steel that resists rust and can withstand brutal conditions in the field. Every Geissele CP-05-435 Ultra Duty Lower Parts Kit comes with an Ambidextrous Super Configurable Safety that provides you with positive tactile feedback when entering the safe or fire position. You'll also get their renowned Maritime Bolt Catch that features aggressive texturing and extended paddles for an easier grip. Trust the Geissele Ultra Duty Lower Parts Kit, No Grip when you need to complete or rebuild your firearm's lower receiver.image

WARNING: California`s Proposition 65

Specifications for Geissele Ultra Duty Lower Parts Kit:

Manufacturer: Geissele
Finish: Type 3 Hard Coat Anodized
Fabric/Material: 7075-T6 Aluminum
Country of Origin: USA

Package Contents:

  • Geissele Ultra Duty Lower Parts Kit
  • 1. Takedown Pin & Pivot Pin Detents (2)
  • 2. Takedown Pin & Pivot Pin Springs (2)
  • 3. Checkered Takedown Pivot Pin
  • 4. Bolt Catch Plunger
  • 5. Bolt Catch Spring
  • 6. Bolt Catch Coiled Pin
  • 7. Maritime Bolt Catch
  • 8. Safety Detent
  • 9. Buffer Retainer
  • 10. Buffer Retainer Spring
  • 11. Safety Detent Spring
  • 12. Checkered Takedown Pin
  • 13. Magazine Release Button
  • 14. Magazine Release Spring
  • 15. Semi-Auto, Ambi Tapped Safety Selector Assembly
  • 16. Magazine Catch
  • 17. Coiled Trigger Guard Pin
  • 18. Geissele Ultra Precision 5 Axis Trigger Guard
  • 19. Hex Key

Geissele Ultra Duty Lower Parts Kit Orderable Models

List of Orderable Models

  • Geissele Ultra Duty Lower Parts Kit, Black, 05-435B , MPN: 05-435B , UPC: 817953025314 , Code: 1TO-LPK-QR117D-05-435B
  • Geissele Ultra Duty Lower Parts Kit, Desert Dirt Color, 05-435S , MPN: 05-435S , UPC: 817953025321 , Code: 1TO-LPK-QR117D-05-435S
  • USED, Geissele Ultra Duty Lower Parts Kit, Black, 05-435B , MPN: 05-435B-EDEMO , Code: 1TO-LPK-QR117D-05-435B-EDEMO-IN-C

Geissele Ultra Duty Lower Parts Kit Unavailable & Discontinued Models

List of Unorderable Models

  • USED Geissele Ultra Duty Lower Parts Kit, Black, 05-435B, EDEMO7, Used, Condition Fair , MPN: 05-435B-EDEMO7 , Code: 1TO-LPK-QR117D-05-435B-EDEMO7
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