Order a custom EXmatch™ (Extreme Match) AR-15 / M-16 pattern barrel with barrel extension. These are custom made to order, extreme match grade barrels. Our barrels are precision pull-button rifled, hand lapped, and inspected with a bore scope for imperfections. They are made to our exact specifications with quality US materials to ensure reliability and accuracy. They are 100% made in the USA. These are reliable, durable and extremely accurate barrels. All EXmatch™ barrels come with a sub-MOA guarantee*. These are the highest quality barrels we offer.
Our AR barrels are tested with milspec buffer tubes and springs. Any changes could change the way your AR functions.
All AR barrels are headspaced, by default, to JP Enterprises bolts.
Gas Block Length
All custom EXmatch™ AR pattern barrels come with a 1.92" gas block length except our ultra light weight and light weight contours which comes with a 1.00" gas block length. Some shorter barrel and gas system length combinations with will also require a 1.00" gas block shoulder length instead of the usual 1.92" to make enough room for engraving our production stamp at the top of the barrel.
Cryogenic Barrel Stress Relief (Cryo)
We also offer cryogenic barrel stress relief (cryo) on barrels. What is cryo? Cryo is a computer controlled scientific dry cryogenic tempering process which relieves stress in firearm barrels. When we cryo a barrel, it is brought down in temperature to -300°F for 24 hours, utilizing dry nitrogen technology, and slowly brought back up to increasingly higher temperatures in controlled increments. By the time the process is complete, which takes 72 hours, the barrel has undergone a 600°F tempering cycle with both hot and cold elements. This allows the material stresses from machining to be relieved which results in a more solid platform with significantly less movement and whipping when the barrel heats up from use. What are the benefits of cryo? With a cryo'ed barrel, the shooter will see a 50 to 60 FPS increase at the muzzle, less fouling, easier cleaning, up to 50% tighter and more accurate groups, DOUBLE the barrel life, and up to 30% lower core temperature. This is a permanent improvement to your barrel. If you are looking for the ultimate in accuracy and durability, cryo is your best option.
Barrel Break-In Procedure
Click here for complete EXmatch™ barrel break in procedures.
Click here for complete EXmatch™ barrel contours.
Click here for EXmatch™ tech information.
Please Note: Read First Before Ordering a .224 Valkyrie or .22 Nosler Chambered Barrel
On our custom AR barrel drop-down menu stipulations, regarding the .224 Valkyrie and .22 Nosler chambering options, we have a note to the side of them shown as "No 1/2" x 28 Threads". We do this because with the types of high pressures and extreme heat generated by those rounds, and the concentration of both in such a small bore diameter, in some cases there isn't enough structural wall thickness at the crown with 1/2" x 28 muzzle threads, and we've seen it quite often "bell out" after shooting a few rounds, noticeably reducing accuracy. Our machinists and technicians put a lot into ensuring our barrels are extremely accurate, and we want them to maintain their accuracy potential for as long as possible.
Please ensure that if you're ordering a .224 Valkyrie or .22 Nosler barrel, and plan on having a threaded muzzle, that you select at least 5/8" x 24 muzzle threads and not 1/2" x 28 muzzle threads.
* Sub-MOA guarantee is a 3 round group, 1 inch or less, at 100 yards with quality match ammunition and proper shooting techniques. Bolt must be headspaced to the barrel (16" or longer) by Sentinel Arms Mfg™ in AR type barrels.
** Lead times are the best estimates, but can sometimes be longer than expected