For your crushwasher needs:
.50 Cal crush washers will be availble after 5/18/2018
8 to 10 Weeks
We only guarantee 1 MOA or less if a Rubber City Armory, JP Ent. or Young Mfg. bolt is headspaced to the barrel by X-Caliber Barrel & Mfg.
Our ARs are tested with mil spec buffer tubes and springs. Any changes could change the way your AR functions.
Please check our Frequently Asked Questions for our current lead times.
Gas Block Selection
- max length with .625 Gas Block - 16"
- max length with .750 Gas Block - 22"
- max length with .875 Gas Block - 28"
- max length with .936 Gas Block - 28"
Gas Block Length
All X-Caliber AR barrels are made to a 1.92" gas block length EXCEPT our Lightweight contour which has a 1.00" length.
Add 1 Week for Cerakote
We use Mil - Spec parts for testing. If any Non Mil - Spec (Adjustable Gas Block, Heavy Buffer, Reinforced Springs, Light/Heavy BCGS, Piston Systems) parts are used, X-Caliber must be contacted. If not your firearm may not cycle properly.
No shipping outside the US
Break in procedures, an oil patch followed by a dry patch for the following:
Stainless, 5-10 one-shot cycles, 1 three-shot cycle, 1 five-shot cycle
Chrome Moly, 5-25 one shot cycles, 2 three shot cycles, 1 five shot cycles