Modular Paintball Barrels Guide | Bore Size, Length, Porting – Flasc Paintball

Welcome to Flasc Paintball Barrels

Flasc Paintball barrels are built for versatility and high performance. Unlike traditional 2-piece barrels (one back for bore size + one front for length), our system is fully modular — giving you hundreds of possible combinations to match your play style, marker, and paint.

How Our Modular System Works

Our barrels break down into three main components:

  • Barrels (Backs): Full-bore designs that work standalone. No front piece required. Run them bare or with just a thread cap if you prefer.
  • Extensions: Add length, porting, or both. They thread onto any Flasc barrel (front threads match exactly), and you can stack multiple extensions for custom total length.
  • Barrel Tips: Optional for thread protection, aesthetics, or minor tuning. Any standard tip fits the front of a barrel or extension.

This setup lets you mix and match:

  • Bore size
  • Bore length
  • Total barrel length
  • Porting style
  • Barrel tip

Result: Endless customization without buying entirely new barrels.

Key Advantages of Modular Barrels

  • True Flexibility — Adjust for different paint types, markers, fields, or weather.
  • Cost-Effective Upgrades — Add extensions or tips instead of replacing the whole barrel.
  • Performance Tuning — Experiment with bore/length/porting based on real data (more below).
  • No One-Size-Fits-All — Traditional barrels force compromises. Flasc lets you dial in exactly what works for you.

Our Barrel Options Overview

  • Micro Bore (2.5"): Super short for compact setups or specific tuning.
  • Core Barrels (5"): Mid-range length — balanced all-rounder.
  • Control Bore (9"): Our highest-performing kits — optimized through years of testing for accuracy, consistency, and efficiency.

Stack extensions on any of these for longer setups or added porting.

Barrel Testing & Research & Development (R&D)

Early on, we invested heavily in prototyping and testing to understand how barrels really work. We answered key questions like:

  • How does bore length affect performance?
  • How does bore size impact accuracy and efficiency?
  • Does total barrel length truly matter?
  • What does porting actually do (noise, velocity, consistency)?
  • How can you make a barrel louder or quieter?
  • What drives better accuracy?

These tests shaped our Control Bore kits — our top-tier performers. We're sharing some of that data openly so you can make informed choices (no marketing hype — just real results).

 

Archive of Key Tests (more coming soon):

Got Questions?

If you're unsure about bore size for your paint/marker, extension stacking, porting options, or how to get the most from our system — reach out! We're happy to help you build the perfect setup.

Shop Modular Barrels Now → Contact Us at info@flascpaintball.com for Custom Advice