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Geissele Super Duty Lower Parts Kit

Questions & Answers
What is the difference between the Ultra Duty and Super Duty Lower Parts Kit?

Ultra duty has the checkered takedown pins while the super duty doesn’t. Ultra duty comes with their higher end safety selector, the super duty comes with a standard ambi selector.

by tuck2014, Verified Owner, May 9, 2020
See 1 More Answer
Which parts are stainless steel? They mention key components but doesn't state which parts. Expert Answer

Most of the parts should be either stainless steel or nitrided stainless steel.

by Kurt Colbourne, Gear Expert, August 24, 2021
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review To the guy who broke his bolt release... by Thisguyoverhere, July 24, 2020
Honestly thats a noob move on your part. You're not supposed to let the hammer smack your bolt catch, it could damage your lower. You're lucky it just broke your bolt catch. If you need to do trigher testing be sure you have an upper attached and bol...
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50/51 found this helpful
Helpful Positive Review excellent LPK by panda, June 20, 2021
parts kit is slightly nicer quality than what other basic lower kits ship out (PSA). Also I prefer Radian safety selector but overall pretty excellent kit from Geissele as always. To the tool that broke his and decided to leave a salty review, test f...
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8/8 found this helpful
Helpful Negative Review Looks Great, bolt release broke / 200 rounds by Jayjay, January 12, 2020
Bolt release broke while testing my trigger for malfunction, only have about 2-300 rounds through it with these parts . Broke while doing trigger malfunction tests . And I don’t know what else to put to make this review long enough .
5/57 found this helpful
Most Recent Reviews Geissele lower parts kit by Mike, June 13, 2022
Quality of Geissele parts are always top notch and super fast shipping from Oprics Planet. The parts fit in my Geissele lower receiver perfectly and I have also used these parts just in other brands of lower receivers. You pay a little more for the G...
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Read All 4 Reviews

Product Discontinued by Manufacturer

Geissele Super Duty Lower Parts Kit has been discontinued by Geissele and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the Gun Parts, AR 15 Parts, Rifle Parts, AR15 Lower Parts yourself to try and find the perfect replacement for you!

Product Info for Geissele Super Duty Lower Parts Kit

Complete your rifle build with the high quality Geissele Super Duty Lower Parts Kit. Geissele constructed most of these AR15 Lower Parts from stainless steel to ensure a longer service life and improved resistance against rusting or failing in the field. Included in the Geissele CP-05-428 Super Duty Lower Parts Kit is their Super Duty Trigger Guard machined from 7075-T6 aluminum and Type 3 hardcoat anodized for maximum toughness that can outlast the elements. You also get the Ambidextrous Posi-Lock Safety that provides positive tactile feedback when engaging, and there's so many other fantastic components that will create a stronger, more reliable weapon for nearly any application. Trust the Geissele Super Duty Lower Parts Kit, No Grip when looking to improve your lower receiver.image

Package Contents:

  • Geissele Super Duty Lower Parts Kit
  • 1. Takedown Pin & Pivot Pin Detents (2)
  • 2. Takedown Pin & Pivot Pin Springs (2)
  • 3. 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. Takedown Pin
  • 13. Magazine Release Button
  • 14. Magazine Release Spring
  • 15. Posi-Snap Ambidextrous Safety Selector Assembly
  • 16. Magazine Catch
  • 17. Coiled Trigger Guard Pin
  • 18. Super Duty Trigger Guard
  • 19. Hex Key

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Geissele Super Duty Lower Parts Kit Unavailable & Discontinued Models

List of Unorderable Models

Geissele Super Duty Lower Parts Kit, Black, 05-428B , MPN: 05-428B , UPC: 817953025291 , Code: 1TO-LPK-QR116D-05-428B
Geissele Super Duty Lower Parts Kit, Desert Dirt Color, 05-428S , MPN: 05-428S , UPC: 817953025307 , Code: 1TO-LPK-QR116D-05-428S
Geissele Super Duty Lower Parts Kit, Black, 05-428B
Geissele Super Duty Lower Parts Kit, Desert Dirt Color, 05-428S
Geissele Super Duty Lower Parts Kit, Black, 05-428B
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Geissele Super Duty Lower Parts Kit, Black, 05-428B
Geissele Super Duty Lower Parts Kit, Desert Dirt Color, 05-428S
2 of 2 images
Geissele Super Duty Lower Parts Kit, Desert Dirt Color, 05-428S

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