Faxon Duty Series Big Gunner AR-10 Barrel 308 Winchester 20" Big Gunner Contour 1:10" Twist Black Nitride
User Ratings
No ratings yet
Be the first to review this product
Features:
- Manufactured 100% in-house from cradle-to-grave.
- Machined from 4150 CMV steel with QPQ nitride coating for added durability and longevity.
- Each barrel is magnetic particle inspected (MPI) to ensure perfect surfaces and sub-surfaces.
- Air-gauge tested to ensure superior accuracy.
- Button rifled with a medium-taper behind the gas block. Gas block journal set to .750".
Specifications
- Manufacturer:
- Faxon Firearms
- Category:
- Barrel
- Length:
- 20.0"
- UPC:
- 816341023307
- MPN:
- 10A810R20NGQ
- Required Component:
- Yes
Sponsored
Cash for Arms
Upgrading your build? Sell what you have.
Turn your old rifle or pistol into cash for your next build.
Get an OfferWhere to Buy
Have one to sell?
Price History
Current
$222.00
Lowest
$188.70
Highest
$238.28
Price Alert
Sign in to save a target price and receive an email when this component drops.
Sign In to Set AlertRelated Guides
Guide
AR-15 Components: A Complete Reference Guide
A comprehensive overview of every major component in an AR-15 build—including what's inside bolt carrier groups and parts kits—organized by assembly for new builders.
12 min read
Guide
Choosing a Barrel: Length, Profile, and Twist Rate
A neutral guide to how barrel length affects velocity and handling, how profile changes weight and heat management, and how twist rate stabilizes different bullet weights.
8 min read
Guide
Left-Handed AR-15 Builds: Ambi Controls and Component Selection
A neutral guide to component strategies for left-handed shooters, left-eye dominant right-handed shooters, and those managing eye/hand dominance mismatches. Covers ambi uppers, charging handles, gas system tuning, and real-world tradeoffs.
6 min read