I selected Bison Armory to upgrade my Rock River Arms 5.56 to the more powerful 6.8 SPC cartridge.  While the 5.56 is great fun at the range and on varmints it is clear that the 6.8 round offers a more robust, and ethical, hunting round.  Hog hunting is big in Texas and an AR-15 firing a 110gr Barnes TSX or 110gr Nosler Accubond is wicked good.

Ben at Bison helped me spec out the following upper:

  • Bison Armory 16″ stainless barrel with Gun-Kote
  • Mid length gas tube
  • Yankee Hill A3 upper receiver
  • Troy mid-length forearm
  • PRI gas block
  • Young flash hider
  • LMT bolt
  • Young national match carrier
  • White Oak Armament charging handle

This upper is a great match with my RRA lower and I topped it off with the new Leupold VXR Firedot 2X7 scope.  This makes for a solid but light rig that points quickly and accurately.  This was driven home recently when I made a snap shot on a coyote.  The coyotes are pretty much out of control on our deer lease so I have no mercy on them.  I was actually hog hunting, sitting in a blind, when a coyote came out of the brush behind me about thirty minutes after sunset.  I wheeled around and pulled the trigger as the illuminated reticle found its mark.  From spotting movement to pulling the trigger was in the two second range – really more of a wingshooting type shot than precision rifle.  The combination of the illuminated reticle and the 110gr Barnes TSX was ruthless and we have one less fawn predator on our lease.

This is my go-to gun when hunting out of a tripod or out still-hunting for whitetail deer and hogs.  It is light, quick, and fast on target.

The deer I have taken either drop instantly or may run 25 yards on a heart/lung shot.

It is also a pleasure to shoot on the range.  Very little recoil.

I am now running a Templar Tactical Nemesis30 titanium suppressor on it which adds to the enjoyment.  Quiet, fast, and accurate – what more could you want?

It really is about the perfect gun for hunting within 200 yards.

Bison Armory receives an A+.  Highly recommended if you are looking to upgrade your 5.56 to 6.8 SPC.


by Mike Coker


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Publisher of Tactical Gun Review. Managing partner of Coker Tactical. I love hunting for Texas whitetail deer, wild hogs, and high-volume Argentina dove. When not hunting you can find me fishing along the Texas Coast or on a wild Colorado river.
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