From ARs to Chassis Rifles: One Stock for Everything

Published on June 6, 2026
Duration: 15:12

This guide details the installation of the UltraDyne Gen 2 adjustable buttstock, focusing on the buffer tube mounting option for an UltraDyne Gen 1 chassis. It covers the straightforward process of threading the stock onto the buffer tube and securing it with a set screw, highlighting the ease and speed of the installation. The guide also touches upon the stock's features, such as adjustable length of pull and cheek height, and its compatibility with various rifle platforms.

Quick Summary

The UltraDyne Gen 2 buttstock offers a lightweight, adjustable solution for various rifle platforms. Key features include clickless adjustments, adjustable cheek height and position, and buffer or Picatinny mounting options. It's constructed from 6061 T6 aluminum and is available in fixed or folding configurations, with pricing starting at $199 for fixed models.

Chapters

  1. 00:00Introduction to UltraDyne Gen 2 Buttstock
  2. 00:13Kyle Schultz from UltimateReloader.com
  3. 00:35Gen 2 Buttstock Features & Specs
  4. 00:54Adjustable Cheek Height and Position
  5. 01:06Adjustable Length of Pull
  6. 01:12Machined from 6061 T6 Aluminum
  7. 01:27Fixed or Folding Options
  8. 01:51Mounting: Picatinny or Buffer
  9. 02:03Buffer Folding Option Example
  10. 02:06Picatinny Mount on CMMG Descent
  11. 02:15Buffer Mount on UD Chassis
  12. 02:22Upgrading Gen 1 Chassis to Gen 2 Buttstock
  13. 02:36Gen 2 Buttstock Pricing
  14. 02:42Installing Gen 2 Buffer Buttstock on Gen 1 Chassis
  15. 03:00Installation Complete & Compactness
  16. 03:17Buffer to Picatinny Adapter Installation
  17. 03:30Installing Picatinny Buttstock on Adapter
  18. 03:50Buffer to Picatinny Adapter Features & Specs
  19. 04:15Adapter Timing and Two-Piece Design
  20. 04:30Adapter Pricing
  21. 04:47Adding Length of Pull Spacers & Bag Rider
  22. 05:03Length of Pull Spacer Installation
  23. 05:27Length of Pull Spacer Features & Specs
  24. 05:40Total Length of Pull Adjustment
  25. 05:50Spacer Thickness and Hardware
  26. 06:02Spacer Pricing
  27. 06:07Bag Rider Features & Specs
  28. 06:24Bag Rider Installation
  29. 06:36Bag Rider Material and Pricing
  30. 06:44Shooting the CMMG Descent
  31. 07:00First Shots with CMMG Descent
  32. 07:21Shooting Impressions
  33. 07:47Conclusion: Gen 2 Stock Review
  34. 08:00Folding Mechanism and Color Options
  35. 08:16Improvement Over Gen 1
  36. 08:27Viewer Engagement & Questions
  37. 08:50UltraDyne Brakes Performance
  38. 09:07Outro & Ultimate Reloader Resources

Frequently Asked Questions

What are the key features of the UltraDyne Gen 2 buttstock?

The UltraDyne Gen 2 buttstock is ultra-lightweight (15.1-17.6 oz), features clickless, rattle-free adjustments, adjustable cheek height and position, and adjustable length of pull. It's machined from 6061 T6 aluminum and is available in fixed or folding options.

How do you install the UltraDyne Gen 2 buttstock on an UltraDyne Gen 1 chassis?

Installation on a Gen 1 chassis is straightforward: ensure the firearm is unloaded, remove the old stock, thread the Gen 2 buttstock onto the buffer tube, and secure it by tightening the set screw on the chassis bottom with a 1/16th hex key.

What are the mounting options for the UltraDyne Gen 2 buttstock?

The Gen 2 buttstock offers both buffer tube mounting for traditional ARs and chassis systems, and Picatinny mounting for bufferless systems like the CMMG Descent. A folding adapter is also available to convert fixed models.

What is the price of the UltraDyne Gen 2 buttstock and its accessories?

Fixed Gen 2 buttstocks cost $199, while folding versions are $299. The buffer to Picatinny adapter is $59, and a pack of length of pull spacers or a bag rider is $39 each.

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