Just because a barrel is marked 5.56 doesn’t mean its in spec. Our 5.56 chamber reaming service reams the chamber to true 5.56 dimensions. It can be used on barrels that have tight dimensions or can also open up .223 REM or .223 Wylde chambers to 5.56 specs to allow it to shoot a wider choice of loads.
Situations where our 5.56 chamber reaming service may be needed include:
- Repairing issues like failure to extract or stuck casings due to tight dimensions in the neck, throat, or body of the chamber
- Tight head space which can lead to extraction issues or premature breakage of the bolt, extractor, or cam pin
- Opening up a smaller chamber like .223 Remington or .223 Wylde to 5.56 specs
- If you struggle to remove a round from the chamber with the charging handle, we can help
Regardless of common misconception, AR barrels still need to be checked for proper head space and chamber dimensions. Worn reamers among other causes can lead to the dimensions of the chamber or the head spacing to be incorrect. Although we tend to see this most commonly in the less expensive “budget” barrels, even higher priced options occasionally have issues. We recommend checking headspace with your BCG and barrel as well keeping the same bolt with the barrel to prevent premature wear.
As with all of our services, we don’t just do the work and send it back. Each component is inspected by a trained and competent armorer or gunsmith and we take into account all of the variables to ensure we are taking the right steps for your situation and notify you of any issues before we start work. Sometimes head space issues can be caused by the bolt so we strongly recommend sending us your bolt for this service.
Any lining such as chrome will be removed by this process. Sometimes we only need to correct the neck or throat area since they tend to be the first places to fall out of spec. In any case, this will affect the velocity, accuracy, of the rounds you shoot and you will need to re-zero any sights or optics as well as re-calibrate any hand-load formulas you have created for the barrel.
While most rifles tend to function better after we do this service, we can not be held liable for any negative effects to accuracy or velocity that may stem from it. This is a reliability service first and foremost.