ABS Barrels that are finish chambered in our shop are guaranteed to shoot sub 1 moa with appropriate match ammunition when the customer stipulates a match dimension chamber. This warranty does not apply to NATO type combat chambers, these barrels are warranted to shoot sub 2 MOA. 

We do not have any control over the gunsmith that builds your system, nor do we have any control over the adjustment of the nut behind the trigger. If you are trying to shoot groups offhand with a red dot scope in a 20 mph swirling cross wind, you are likely not going to get moa performance.

We recommend the use of rifle builders that are familiar with our barrel systems and have had consistent results over the years. 

Rifle builders that are approved by ABS include (but are not limited to):

Finished barrels from our shop or from the builders listed above have a 100% customer satisfaction warranty. If you have a problem with your barrel please email for a return authorization and we will repair or replace it. This warranty does not cover buyer's remorse, or problems in the build. If the problem was in the build we will still help get your system shooting. The first hour of trouble shooting and repair is without fee, beyond that the fee is $65/shop hour to correct build issues not of our doing. Shipping to our shop and return is the responsibility of the customer. 

If, after a service/warranty return, the issue is not corrected; we will happily refund the original purchase price of the barrel. 

Copyright © 2004 Advanced Barrel Systems, Inc.