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Patriot Defense | 9mm Barrel Reaming Service

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Patriot Defense | 9mm Barrel Reaming Service

We utilize our custom 9mm Match Finish Reamer to ensure we bring your undersized chamber back to SAAMI spec while still maintaining the accuracy you demand. Chamber will be sized properly and the “leade” lengthened to allow a much greater range of projectile and OAL to be utilized. This service will greatly increase reliability in guns with short or no “leade” and has no negative affect on accuracy. Usual turnaround time is less than 24hrs and pricing includes return shipping back to you.


Please mail your barrel to with a copy of your invoice enclosed:


3352 CR 212

Anderson, TX 77830


*For CZ or other melonite treated barrels please use : Patriot Defense | 9mm Barrel Reaming (Hard Coating/Melonite/DLC)

*Please ensure barrel is clean when sending or an additional cleaning charge may incur. 

*Please ensure barrel is properly packaged when shipped to prevent damage during transit

17 Reviews Hide Reviews Show Reviews

  • 5
    Canik Rival Chamber Reaming

    Posted by Wallace E Pressley on May 18th 2023

    Job was excellent and service was fast. Highly recommend Patriot Defense for their reaming service

  • 5
    Barrel Reaming Service

    Posted by Bruce Wallace on Jul 6th 2022

    Patriot Defense has reamed three barrels to accommodate my preferred OAL. They were also available to answer questions along the way. Each time the work was performed correctly and my barrels were returned promptly. I recommend and will use their barrel reaming service again.

  • 4
    Barrel spec correction on Tanfoglio

    Posted by Bill Mayne on May 16th 2022

    I didn't see much improvement with my failure to extract and eject problem, but loaded rounds do fall out of the chamber much better when chamber checking rounds.

  • 5
    9mm finish reaming

    Posted by Liberty on Dec 10th 2021

    Tight chamber no more. The process is straight forward, smooth process, turn around time was fast. Communication on the shipping back to me was unexpected. The work looks great and rounds that previously didn't pass the plunk test work flawlessly now.

  • 5
    Reaming service

    Posted by David Downey on Dec 6th 2021

    They received the barrels Friday. I had them back in my hand the next Friday. I can now load to the overall length I needed! Will be using Patriot Defense again!

  • 5
    9mm barrel reaming

    Posted by Steve on Jun 17th 2021

    This is the fourth barrel Patriot has reamed for me and, just like the last three, this one was flawless. I can now shoot anything up to full length saami spec.s without issues.

  • 5
    Tanfo chamber was jamming with reloads of various types. I was told that the chamber needed to be reamed. Club personnel suggested Patriot Defense do the work.

    Posted by Tom Koller on May 27th 2021

    I have chamber checked numerous reloads that were jamming and all easily fit into chamber. Problem solved. The work was done with extremely fast turn around and the value for money was definitely a big plus. I will pass this info to friends and will also shop Patriot Defense for future parts and services. Very friendly people to work with as well. Exceeded my expectations.

  • 5
    9mm barrel reaming service

    Posted by Werner Ostmann on May 5th 2021

    This service was performed quickly, and I got my barrel back fast. Before reaming my reloads that would pass through my chamber gauge, but about 10% would not pass the "plunk test". I even had some rounds that would jam the gun out of battery, leaving a live round jammed in the chamber. This created a dangerous situation when removing the round. After I got the barrel back it worked flawlessly.

  • 5
    Barrel reaming 9 mm

    Posted by William on Jan 25th 2021

    The entire process, shipping and return took
    7 days. The barrel looks great, I think they even polished the feed ramp. It made it much easier to load bullets with different ogives that will pass the plunk test.