Black Hole Weaponry AR-15 18" Mid-Length Stainless Steel 1:8 Polygonal Rifled Barrel - 5.56 Chamber
Black Hole Weaponry Barrels employ the use of 416R, match grade stainless steel. BHW Barrels specialize in Polygonal rifling; The shape of the lands and grooves are based on a circle, so there are no sharp corners or edges for the bullet to conform into. This means there is a tight seal and thus less bullet deformation. This rifling form is unique in its ability to allow the bullet to be centered and fully supported by the barrel’s bore.This arc shaped rifling has long been held in very high regard for its accuracy, increased velocity, reduced gas cutting and ease of cleaning.
- Caliber: 5.56x45mm (NATO)
- Barrel Length: 18" H-Bar Profile
- Gas System: Mid-Length
- Barrel Material: 416 Stainless Steel
- Barrel Finish: Matte Black
- Rifling: 1:8 Polygonal 3 groove
- M4 feed ramp is included
- Under Handguard: 0.88 inches
- In front of gas block: 0.73 inches
- .750" diameter at gas block
- Threading (TPI): 1/2x28"
- Magnetic particle inspections and other non-destructive testing performed on barrels by manufacturer.
- Manufactured right here in the U.S.A.
15 Reviews Hide Reviews Show Reviews
This barrel exceeds expectations. Shooting factory CBC OTM 77gr bullets down this barrel, I average < MOA five shot groups, getting all the way down to 5/8ths inches. Also, confession: I never broke it in, officially. If you're on the fence, just buy it. It's freaking awesome.
Finish was excellent. Mated nicely into a Mil Spec Texas Black Rifle Co. matched upper and lower. Still going through Black Hole's recommended break in, so no info on the accuracy yet, but I'm optimistic!!
I gave it four stars because it took a long time to get here!!
Great Barrel, extremely tight fit. A+++++++
Built an ar-15 with 18" BHW barrel and added an Adams piston kit to it. I was able to shoot accurately at 200 yards using 5.56 federal 62 grain ammo
I have not finished the build on this barrel, but looks awesome.
I was going to go with an Odin Works barrel for a similar price, but when this went on sale for $208 and came with an upper and free shipping... Yeah.
Just sighted in the rifle today after breaking it in. Shooting clay pigeons (no, they were on the ground, not in the air) from 100 yards at x6 power with PMC 55 gr bullets was a piece of cake. If you have doubts, just do it. You won't regret this. At all. This video convinced me it was worth it. https://www.youtube.com/watch?v=TiaceewKkHY&list=PLdxQDAkhWanFV2zzm4rjnVZIicYZ65oq_&index=8
After opening the box, I was immediately impressed wit the quality of this barrel. Finished assembly yesterday and test fired last night. Cannot wait to get to the range!
Used this barrel and the SAA upper in a build for my wife. BTW, I also used a frankenbolt just to see. With 200 rounds down the pipe, the barrel functions far, far beyond the expectations I had for it. I built the gun, zeroed it at 100 with a Burris scope, then handed it to my wife. She is apparently a better shot than I. She managed regular sub-moa groups at 100yds. My jaw on the floor, I then took the rifle back with a grimmace and tried at half silhouettes at 425yds. It was boring. Every shot was rewarded with a satisfying 'clang' to the envy of my fellow shooters. FYI, don't anger my wife.
This was first complete upper build...went together easily ,
after going thru the break in procedure i was able to get 5 shot 3/4 " groups at 100yds with hornady 55gr #80275 using a rock river two stage trigger nikon 3x9 scope..other ammos opened up a bit, hoping to test some others to see what it really likes...very happy with this barrel