CZ Scorpion Cleaning & Inspection

Published on April 22, 2019
Duration: 37:53

This comprehensive guide details the field stripping, cleaning, and reassembly of a CZ Scorpion EVO 3 S1, specifically addressing heavy fouling from suppressed fire. Expert instructor Eric demonstrates advanced techniques, including the use of an ultrasonic cleaner and a Foredom tool for feed ramp polishing. The process covers detailed bolt disassembly and wear analysis, emphasizing proper lubrication and function testing for optimal performance.

Quick Summary

Expert cleaning and inspection of the CZ Scorpion EVO 3 S1 involves detailed field stripping, including bolt and trigger pack removal. Key steps include addressing carbon buildup, polishing the feed ramp with a Foredom tool, and inspecting for normal wear like hammer peening. Proper lubrication with products like LPS 2 or ALG Go-Juice is essential for maintaining reliability.

Chapters

  1. 00:00Introduction: CZ Scorpion SBR Overview
  2. 01:11Suppressor Removal & Thread Adapters
  3. 03:44Field Stripping the Scorpion Lower Receiver
  4. 05:59Lower Receiver & Trigger Pack Inspection
  5. 07:14Bolt & Upper Receiver Disassembly
  6. 11:14Feed Ramp Inspection
  7. 12:08Detailed Bolt Disassembly (Extractor, Firing Pin)
  8. 16:14Wear Analysis & Ultrasonic Cleaning
  9. 20:01Lubrication & Reassembly
  10. 23:06Feed Ramp Polishing & Function Test

Frequently Asked Questions

How do you field strip a CZ Scorpion EVO 3 S1 for cleaning?

To field strip the CZ Scorpion, first remove the stock and grip. Then, push out the captured pin on the lower receiver to separate it from the upper. Manually pull back the bolt and lift it out of the receiver. Finally, remove the charging handle retention pin and drive out the bolt's extractor pin.

What are common wear points on a CZ Scorpion after heavy use?

After approximately 3,000 rounds, common wear points on the CZ Scorpion include minor peening or mushrooming on the face of the hammer and the rear of the bolt carrier. Drag marks from the ejector are also noted. These are generally considered normal wear for the platform.

How can I improve feeding reliability on a CZ Scorpion?

To ensure reliable feeding on a CZ Scorpion, it's recommended to polish the feed ramp to a mirror finish. This can be achieved using a Foredom rotary tool with a Cratex wheel, addressing potential friction points that could cause feeding issues.

What lubricants are recommended for the CZ Scorpion after cleaning?

For lubricating the CZ Scorpion after cleaning, expert recommendations include LPS 2 Heavy-Duty Lubricant for general protection and ALG Go-Juice for internal components. Proper lubrication is key to maintaining smooth operation and preventing wear.

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