Barrels, Barrels, Barrels!!!
 Important Product Notice
Please note that due to recent ongoing issues, such as internal barrel erosion and often mysterious internal metal flaking generally always close to the muzzle that some of our customer have been experiencing exclusively with Bartlein barrels, we will no longer be stocking Bartlein barrels.  If you would prefer a Bartlein barrel, we will most certainly still machine their blanks on a special order basis, however,  due to the recent and numerous issues isolated to Bartelin barrels in the last 12 months, finished barrels will be strictly at the risk of the customer, where as Keystone Accuracy will accept no responsibility for any manufacturing parameters that we are in no way in control of.  We do however warrant all of the manufacturing, machining, & workmanship processes that take place within the control of Keystone Accuracy.
updated: 30 Oct 2017
Barrels for Virtually Any Application
Rifle barrels come in many different sizes, shapes, calibers, and configurations.  They are also meant for many different firearms platforms.  At Keystone Accuracy, we do them all, and do them well.  Much of what we do is geared toward rifle competition and police & military applications where accuracy and performance are an absolute must, since there is no such thing as a second chance.

We specialize in rifle barrels for high end bolt actions rifles of type, the AR-15 platform, and the larger cousin, the AR-10/LR .308 platforms for big game hunting, tactical, and competition applications.  Keystone Accuracy barrels can be found in hard core competition all over the United States, as well as on high end rifles taken to other continents for big game hunting.

Keystone Accuracy is fully licensed with the BAFTE with a Type 7 (manufacturer's) FFL and can accept and barrel or re-barrel virtually any rifle action.

Barrels and actions that are commonly chambered at Keystone Accuracy are as follows, but certainly not limited to:

  • AR-15
  • AR-10 / LR308
Common bolt action rifle actions include:
  • Remington
  • Winchester
  • Savage (drop in)
  • Ruger Precision Rifle (drop in)
  • Mauser
  • Several Palma, long range, and tactical style actions  to include Stolle, RPA, Borden, Defiance, & Stiller....just to name a few.


If you don't happen to see it, just call and ask.  We do it in many standard and non standard contours and chamberings custom tailored to your needs.


Ruger Precision Rifle Drop-in barrels
Ruger has manufactured a modular rifle that use barrels that are easily interchangeable.  Why get stuck with a marginal barrel that are from a manufacturer who's low bid won the contract to be installed on this rifle??  Keystone Accuracy fully machines extremely high quality barrel blanks for this application at affordable prices.
Click on the picture for more information
NRA/CMP Legal AR-15 & AR-10/LR308 Service Rifle Competition Barrels
Each barrel is contoured using the latest CNC technology to guarantee absolute uniformity.  A standard service rifle barrel is 1" under the hand guard using a .750 gas block tenon with a slightly smaller diameter just forward of the gas block in order to allow a front sight or gas block to be installed without scratching or marring the exposed barrel portion.

Once each barrel is contoured, it is indicated in a lathe in order to cut and polish the chamber using either a .223 Wylde, .223 CLE reamer or a customer supplied reamer.  Each barrel is treated with the same painstaking care as a competition bench rest barrel, where absolute accuracy is demanded.  Once the chamber is installed to the minimum side of SAAMI spec, a barrel extension is torqued to proper spec and a gas port is carefully drilled and deburred from the inside of the bore.  If service options are request
ed, they are also completed prior to cutting the 11 degree muzzle crown.

We also offer fully contoured but unchambered, and undrilled blanks since we realize that there are many home gunsmiths in the crowd that prefer to chamber their own barrels.

AR-15
416 Stainless steel button rifle barrel, 1:7 standard (1:9 also available):
Price complete, post-ban....................................................$205
Price complete, pre-ban......................................................$215
Unchambered contoured blank
(bbl ext included)...........$120, ($125 threaded muzzle)

416 Stainless steel premium single point cut rifle barrels, 1:7 standard
(other twist rates available on special order)
Krieger 4 groove.................................................................$450 $398
please call for availability
Bartlein 5R
...........................................................................$450 please call for availability

AR-10 / LR308
(using a BAT Machine bbl extension on all barrels)
- Multiple calibers offered, please call -
416 Stainless steel button rifle barrel, 1:10 standard (other twist rates available):
Price complete, post-ban....................................................$349
Price complete, pre-ban......................................................$359
Unchambered contoured blank (bbl ext included)...........$240, ($245 threaded muzzle)

416 Stainless steel premium single point cut rifle barrels
(many twist rates available on special order)
Krieger 4 groove.........................................................from $575
please call for availability
Bartlein 5R
...................................................................from $575 please call for availability

A word about barrels....
(button vs. cut rifling)


Many customers often call and have the question regarding what is the significant difference between button rifling vs. a single point cut rifle barrel.  In short, it all has to do with vastly different manufacturing processes.  Both processes have been around for several decades, both yielding extreme accuracy and fine performance, which is why Keystone Accuracy confidently offers both types.

All button barrels are fundamentally manufactured in the same manner regardless of manufacturer's asking price, which is a much faster and less expensive method of rifling.  As a result, button barrels are often significantly less expensive and are said to yield about 20% less life than cut rifling, while still delivering fine performance.

Single point cut rifling is the oldest of the two methods and is more time consuming, but is often cited as holding accuracy longer and also seems show more gradual signs of expiration over a button rifled barrel.

So....which is better??  I think the answer lies with how often will the barrel is to be used and what will meet your budget.  I have done well in rifle competition with both types, but my personal opinion is that at the same cost, I'd use a cut rifle barrel every time, while at a significantly less cost for a button barrel, I'd again defer to usage to make my decision.  This is precisely why I offer virtually the same button rifle barrel for $190 less than a single point cut rifle barrel.  Either way, you'll get the finest barrel available dollar for dollar.
Muzzle options

All barrels can either be requested in both post-ban and pre-ban configuration.  This "ban" terminology refers to the Clinton gun ban of 1994 which restricted the public purchase of threaded muzzles.  It expired in 2004, however the terms conveniently stuck.
The most common muzzle threads are 1/2-28 and 5/8-24.

Muzzle threads............add $10

Ambidextrous Capability

Although most manufacturers have chosen to forget about left handed shooters, we have not only remembered, we specialize in ambidextrous capability.
We offer a premium proprietary ambidextrous barrel extension in order to accept either a right handed or left handed bolt.


Ambidextrous Extension.......add $20
More to come, please stay tuned!
- All prices include a 3% cash discount - 

Page is currently under construction.  Please check back for frequent updates!