The Q2 Pistol!

Published on December 5, 2024
Duration: 12:12

Mark Serbu details the design and construction of his Q2 Pistol, a single-day prototype built in 2011. The pistol utilizes a BFG-50 trigger group and features a unique removable falling block action. Serbu discusses material choices like 4142 pre-hard steel for the breech block and 1018 steel for the frame, along with aesthetic design elements and legal compliance through a rifled barrel liner.

Quick Summary

The Q2 Pistol is a custom handgun prototype built by Mark Serbu in one day, featuring a unique removable falling block action. It uses a BFG-50 trigger group and is constructed from 4142 pre-hard steel and 1018 steel, with a rifled barrel liner for NFA compliance.

Chapters

  1. 00:00Introduction to the Q2 Pistol
  2. 01:02Action and Materials Explained
  3. 02:03Design and Aesthetics
  4. 03:08Legal Compliance: Rifled Barrel Liner
  5. 04:24Loading and Shooting Demo
  6. 05:44Firing Pin Analysis
  7. 08:13Accuracy Test (No Sights)
  8. 11:06Build Process Visuals (CAD/Machining)

Frequently Asked Questions

What is the Q2 Pistol and who designed it?

The Q2 Pistol is a custom handgun prototype designed and built by Mark Serbu in a single day back in September 2011. It's essentially an upper receiver utilizing a trigger group and hammer from a BFG-50.

What kind of action does the Q2 Pistol use?

The Q2 Pistol features a unique 'fall-out block' action, meaning the breech block can be completely removed for loading. This design is crafted from durable materials like 4142 pre-hard steel for the block and 1018 steel for the frame.

How did the Q2 Pistol comply with NFA regulations?

To meet NFA requirements for smoothbore pistols, Mark Serbu silver-soldered and pinned a rifled barrel liner into the initial smoothbore design, ensuring it was classified as a legal firearm.

How accurate is the Q2 Pistol?

Despite being a one-day build with no sights, the Q2 Pistol demonstrated surprising accuracy. Mark Serbu was able to hit the bullseye at 10 yards by sighting across the flat top of the frame.

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