Black Hole Weaponry AR-15 Carbine 16" M-4 Profile Stainless Steel 1:8 Polygonal Rifled Barrel 5.56 Chamber
***Includes FREE Assembled Nitride AR15 Bolt - Head Spaced to Barrel
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: 16" M-4 Profile
- Gas System: Carbine 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.
9 Reviews Hide Reviews Show Reviews
I have wanted one of these barrels for a long time now. I had heard reviews all over the board on them. This lived up to all the positive reviews I had read!
I bought this a few years ago for a build and had a gunsmith install it to the upper.
Bad news: It came with a short chamber and had to be reamed a good amount to make minimum factory spec head space. Fortunately the gunsmith discovered this prior to assembly and had no problem correcting it.
Good news: I have put about 1000 rds through it with no issues. MOA or better with most ammo if I do my part. Seems to clean up faster than traditional rifling. Good quality upper that had no issues with a different brand BCG and upper parts. Would have given it 5 stars if the barrel had come ready to fire out of the box.
This is a very good barrel. The barrel looks very good. I am getting 1" grouping at 100 yards with a 3x fixed Nikon p223 scope. I've been using Federal xm855 ammo so far. Received a free stripped upper (Bonus!!!) with this order. Cleaning the barrel is a breeze because of the type of rifling in it. Be sure to do the proper breaking-in of the barrel recommended by BHW. I highly recommend this barrel, and any other BHW barrels. I will be ordering the 18" mid length soon! Buy these you will not regret it.
I ordered this Barrel with the upper receiver from SAA on a Friday and was very pleased with the service on the phone. I had it in my hands on Tuesday and mounted it on my Aeroprecision lower assembly and that I also orderd from SAA. Everything fit perfectly and operated very smoothly. I had a handwritten note in the box that said the nice folks at SAA had headspaced and tested the Nickel Boron BCG that I purchased with this upper receiver and barrel. I thought that was great and shows the service and attention to detail that this company gives to it's customers. I read some reviews that said this Black Hole Weaponry barrel shoots the best MOA with 68 to 75 grain bullets so I bought 100 rounds worth and headed to the range to sight it in. Once I got the scope sighted at 100 yards I started to shoot outstanding sub MOA groups off of a sandbag on the bench. I will try it at 300 yards next and I feel confident that the 75 grain loads will perform sub MOA groups at that range as well. I could not be any happier with this barrel,I have read a lot about the Black Hole Weaponry Polygonal Barrels and for this price I just had to have one. I am very happy with the whole upper receiver assembly and with this barrel. I am especially pleased with the quality, craftsmanship and attention to detail from the staff at SAA. I will be using the Black Hole Weaponry Barrel on my next build, probably a 20" stainless fluted for some varmint shooting. Great Barrel!
very nice barrel never had an issue with it. would highly recommend it.
i personally own three of these barrels in various calibers (5.56, 6.8, 300blk) and i have to say hands down the most accurate barrels on the market.
I built a carbine M4 using this barrel and it is one of the most accurate carbines I own. I also have a 16" Spikes Tactical mid-length barrel and the Blackhole holds a tighter grouping. I have not been able to tell the difference between the Blackhole carbine and Spikes mid-length barrels as far as recoil though. I wish they made this a a 20" rifle barrel.
Great barrel, nice and crisp rifling. The 1x8 twist isn't good for 55gr. bullets, 2-3 moa. I shot multiple sub moa groups with Hornady 68gr. match hpbt but sold because I didn't like the m4 profile... just my opinion.
I Have An 18 Inch Version Of This Barrel And Love It, Now If You Will Make This Barrel With A Mid Length Gas Port I Will Buy Some, Im Not A Fan Of Carbine Length Gas Ports