Small one on the rear cap: https://mcsus.com/products/pistelle-x-68-rear-cap-valve-oring
The one on the Pierce valve: https://mcsus.com/products/pistelle-x-68-twist-cap-with-activation-button-oring
The Gen 2 upgrade: https://mcsus.com/products/gen2-pistelle-x-68-upgrade-valve-assembly-for-replacement-and-upgrade
The entire O-ring kit: https://mcsus.com/products/gen2-pistelle-x-68-upgraded-seal-oring-kit-and-lubricant-grease
The white 019: https://oringsandmore.com/ptfe-orings-size-019-minimum-2-pcs/
The O21: https://oringsandmore.com/buna-o-rings-021-90d-minimum-50-pcs/
The 017 for the pierce valve if you don’t want to use the MCS one: https://oringsandmore.com/buna-o-rings-017-90d-minimum-50-pcs/
For the Bolt tip: https://oringsandmore.com/buna-90-o-rings-12-x-2mm-minimum-25-pcs/?searchid=2731812&search_query=buna+90+12+x2
The “Hidden” O-ring Replaces the blue one in the “Basket”: https://www.theoringstore.com/store/index.php?main_page=product_info&products_id=24529
A Gen 2 pistol!! https://mcsus.com/products/defender-package-defense-pistol-35-50-joules-pistelle-x-68
****Solved the X68 leak issue and completed a full Gen 2 conversion! In this video, I break down every step of the upgrade process, show the before/after performance data, and share the final FPS/Joule results after the conversion. If you’re looking for clear testing numbers, leak-related insights, or real performance improvements, this video covers it all.
You’ll see:
– What was causing the X68 leak
– How the Gen 2 system performed after the upgrade
– FPS and Joule readings from my final test runs
– O-ring details, fitment notes, and important observations
– A clean comparison between Gen 1 vs Gen 2 performance
– Overall power gain after the conversion
This video focuses on data, results, and observation-based testing, so you get a full picture of how the Gen 2 setup performs. If you’re researching whether the upgrade is worth it, these numbers will help you understand the difference.
📌 Included in the video:
• Leak identification notes
• Seal and O-ring topics
• Valve performance discussion
• Chronograph readings
• Power curve changes
• Final thoughts on reliability and consistency
If you enjoy X68 content, upgrades, performance data, or long-term results, don’t forget to subscribe for more detailed breakdowns and future tests.
00:00 – Intro: What Happened With the X68 Leak
00:28 – Overview of Gen 2 Conversion
01:02 – Unboxing the Gen 2 Valve & Parts
01:39 – What’s New in the Updated Gen 2 Section
02:14 – Comparing Old Setup vs New Setup
02:42 – The Source of the Leak (Visual Check)
03:17 – Inside the MCS Gen 2 Valve Kit
03:51 – Full Component Breakdown
04:26 – O-Ring Overview (Sizes & Locations)
05:00 – Key Design Improvements in Gen 2
05:34 – Internal Chamber Notes
06:13 – What Changed After Conversion
06:43 – Airflow & Housing Update
07:19 – Performance Characteristics (Early Results)
08:02 – First Power Numbers Comparison
08:42 – FPS Readings (Sample Data)
09:11 – Joule Output Variation (Sample Data)
09:45 – High-Power Burst Test (Recorded Values)
10:21 – After-Conversion Leak Check (Overview)
10:55 – Efficiency, Smoothness & Output Notes
11:27 – Final Thoughts on Gen 2 Upgrade
11:59 – Outro & What’s Next
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