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First & Only from BISON ARMORY

Shop for 18″ .223 Wylde FULCRUM Barrels HERE

Shop for 18″ 6.8 SPC FULCRUM Barrels HERE

.308 WIN FULCRUM Barrels HERE!

FULCRUM barrels are the first barrels for the AR platform that deliver the perfect balance of heavy barrel performance and mid-weight utility. In other words, phenomenal accuracy without all the weight, so you can carry longer and shoot better. A lot better.

SPECS

FULCRUM barrels are currently available only in 18” lengths and in .223, 6.8 SPC and .308 Win.

FULCRUM barrels have a larger overall diameter than our mid-weight barrels, but a smaller overall diameter than our heavy barrels. FULCRUMs are the only barrels on the market that are .825 diameter from the gas block to the muzzle, so you must use our proprietary FULCRUM gas blocks for now (more on that below).

The 18” .223 FULCRUM barrel (including barrel extension) weighs 40 oz., which is 2 oz. more than our standard 18” SPR .223 barrel and 6 oz. more than our standard 18” RECON .223 barrel (including extensions).

The 18” 6.8 SPC FULCRUM barrel (including barrel extension) weighs 38 oz., which is 2 oz. more than our standard 18” SPR 6.8 SPC barrel and 6 oz. more than our standard 18” RECON 6.8 SPC barrel (including extensions).

All FULCRUM barrels are stress relieved 416R stainless steel and have precision made BAT Machine barrel extensions with M4 feed ramps. They are available now with threaded muzzles, with unthreaded on the way, and in both cases are cut with 11 degree target crowns.

SCIENCE
So what do you get for these few extra ounces? A kick ass barrel. Here’s why:

The FULCRUM’s increased diameter produces a barrel that is stiffer than our mid-weight barrels and has more surface area, both as a result of the larger diameter and the fluting. The increase in surface area produces better heat dissipation and a faster rate of cooling. The underlying increase in thermal mass also means FULCRUMs are less sensitive to fluctuations in temperature, which translates to more consistent shooting under all conditions.

The increase in diameter also pushes more mass towards the front of the FULCRUM barrel, which improves the harmonics and increases the overall stability and balance of the shooting platform. The extra mass decreases felt recoil, and its distribution increases the moment of inertia, which reduces angular acceleration for a smooth shot that helps you stay on target.

The preceding are all the reasons why standard heavy barrels shoot so well. The beauty of the FULCRUM is that you get all that performance from a barrel that weighs far less.

GAS BLOCKS
All FULCRUM barrels have a .825 diameter gas block journal, which means they will only work with Bison Armory FULCRUM gas blocks. There are no other .825 gas blocks on the market (yet). We didn’t design the barrels this way just to mess with you, we did it because it was the only way to achieve the optimal balance of weight and performance.

FULCRUM standard gas blocks are custom made to our specs by Elite Iron and SLR Rifleworks makes our adjustable blocks. We are very proud to have these outstanding US manufacturers work with us to develop this essential hardware. To learn more about Elite Iron visit their web page HERE and for more information about SLR Rifleworks visit their web page HERE.

UPPER ASSEMBLIES

 

 

 

 

 

 

Here’s our new Barrel Specification Chart showing how the FULCRUMs fit in

300 BLACKOUT barrels are available NOW in all new 8.5″ Pistol and 16″ Close Quarters Recon (CQR) profiles. Both are chambered for 300BLK ammunition, with threaded muzzles, pistol length gas, 6 groove / 1:7″ rifling and 416R stainless steel. Upper assemblies based on these barrels are on their way soon! For more pics and info on these barrels visit our product pages HERE.

We now carry SLR Rifleworks Sentry 7 adjustable gas blocks. If you want the best, there is nothing better. This block works with standard gas tubes and features single tool click adjust gas metering, a Nexturn Swiss precision metering screw, titanium leaf spring detent mechanism and 100% lifetime guarantee. These blocks are available with the purchase of any Bison Armory barrel or upper.

We are now fully stocked with AR-15 barrel nut shim sets. They work with all AR-15 barrels, including 223, 5.56, 6.8 SPC and 300 BLK. Our shims guarantee you perfect and hassle-free barrel nut / gas tube alignment within the correct torque specs every time. The best 5$ you will ever spend! Check ’em out HERE along with our instructional video.

.300 AAC BLACKOUT is coming soon to Bison Amory! The market has spoken, and people want .300 BLK. Look for our own newly designed 8.5″ and 16″ barrels and uppers to arrive in our store over the next couple of months. We will keep you updated here and elsewhere as the inventory rolls in and products become available!

The 8.5″ pistol Blackout barrels will only take a low profile gas block, but there’s no way to run one with a piston anyway. The 16″ pistol gas Blackout barrels are going to have our new CQR close quarters recon profile, with a 1:7 twist. They will be 6-groove, button rifled, and made from 416R stainless. For a hunting gun or tactical rifle that can reach out, nothing compares with 6.8 in the AR-15 platform. But for close in work, the .300 BLK is top notch. Pistol powders give it a lot of oomph from a small powder charge.

Our import permit has been approved and a fresh batch of 6.8 BSP bullets is now on its way here from Australia. Preorder now through our web-store HERE. We expect to start shipping orders around the end of May.

The July 2014 issue of Rifle Firepower is on newsstands now, and features a “First Shots” article about a father-son project to build a young hunter his first AR in 6.8 SPC for deer-hunting. Central to the build is one of our 16” 6.8 SPC barrels. The article also features a great discussion on the 6.8 Bison Subsonic Platform. Pick up a copy now or check out the preview HERE.

Our 16″ .223 Wylde barrels have just arrived!

Lightweight Recon profile, threaded, 6 groove / 1:7″ twist.

Pick your finish and get shooting!

NOW IN STOCK!  Add one of these beauties to your build / barrel order now!

 

Here are some WAY better pics (Click to enlarge) to show you all the fine detail, fit and finish on our line of skins. These things are just plain comfortable no matter how you slice it, and look great. Follow this LINK to the product page on our store.