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View Full Version : Going featureless on 5.45 AR-What brake?


bighead
06-12-2012, 10:02 AM
Putting together a new featureless 5.45 upper and for the sake of being featureless I have to get rid of the bird cage.What do you gentleman suggest that will allow me to remain featureless?


Thanks in advance.

nyc71
06-12-2012, 10:16 AM
Please forgive my ignorance, what's the attraction to featureless AR?

mif_slim
06-12-2012, 10:17 AM
Cheapest comp out there. Cut the rear chamber to make it 2 chamber and it'll work almost as good as a JP comp. haha...as me how I know..

http://www.stagarms.com/product_info.php?products_id=334

bighead
06-12-2012, 10:47 AM
Please forgive my ignorance, what's the attraction to featureless AR?

The ability to use normal capacity magazines without a bullet button.

bighead
06-12-2012, 10:52 AM
Are the threads the same as 5.56?

p2rider426
06-12-2012, 10:58 AM
How much length does that comp add when installed? I've been thinking about building a super lightweight and cheap 14.5 featureless upper

mif_slim
06-12-2012, 11:49 AM
Good question, I don't k.ie about 5.45 threading but I'm thinking its the same..some correct me if I'm wrong. I don't own much Russian rounds besides the saiga, sks, mosin nagant... Lol.

FeuerFrei
06-12-2012, 12:05 PM
Putting together a new featureless 5.45 upper and for the sake of being featureless I have to get rid of the bird cage.What do you gentleman suggest that will allow me to remain featureless?


Thanks in advance.

I use Lavang compensators with good results. $25
Range friendly and better when hunting varmints. (no ear pro).
http://www.sogarmory.com/ImageHandler.ashx?ImageName=GS-01_102282_img1.jpg&Thumbnail=true&MaxWidth=300&MaxHeight=300

PEBKAC
06-12-2012, 12:28 PM
The 5.45 barrel I had for a while was 1/2 x 28. It was an S&W take off iirc.

Given that 5.45 is .221 so the barrels are almost identical to .223 with regards to outside dimensions it wouldn't surprise me if most 5.45 barrels were 1/2 x 28.

EvoXRiley
06-12-2012, 12:36 PM
Standard 5.56 flash hiders and Brakes will work.

i run a stag, its LOUD way louder then my Battle comp 2.0 and does its job well

wsmc27
06-12-2012, 1:09 PM
...just ran Parallax Tacticals' new Gen2 Paracomp mb yesterday for the first time, not a lot of rounds but felt great on our new PSA 16" mid-length upper. Several sets of controlled and hammer pairs fired, nice controllability imo. Tho', the only mb we've used the last couple years for comparison is the YHM flat-end Phantom brake that has been on a 16" carbine for a couple years.

Pretty loud. ;)

http://www.parallaxtactical.com/store/parallax-tactical-paracomp-gen2-1-5-muzzle-brake-1-2x28-2250.html

Anyway, I like it better then the YHM.

bighead
06-12-2012, 1:26 PM
So the standard 5.56 brake will work?

Irish Gunner
06-12-2012, 1:49 PM
Please forgive my ignorance, what's the attraction to featureless AR?

If Senator Yee gets his way, that will be about the only legal configuration in this communist state.

Chaos47
06-12-2012, 2:02 PM
Check out the link in my sig. 80ish muzzle devices listed and their legality in CA on a featureless build

bighead
06-12-2012, 2:52 PM
Maybe I wasn't clear, are the threads on the 5.45 the same as the 5.56?

hermosabeach
06-12-2012, 3:12 PM
No
The tradition ak74 threads are 24mm
I guess it was to prevent a 5.45mm from being attached to a 30 cal gun

You can remove the front sight block and cut off the threads. This leaves the barrel. You could then thread the barrel to either the ak 74 pattern or the m4 pattern
You might need to turn down the barrels od a few thousands before the m4 die would fit

hermosabeach
06-12-2012, 3:14 PM
You can also see the muzzle on the atlantic firearms sight. The saiga iz-240 or 340 have a thin sheeve welded over the threads

wsmc27
06-12-2012, 3:16 PM
^^^ ???? OP refers to 5.45 AR...not a AK barrel.

Maybe I misunderstand this? :)

Thinking OP should contact the manufacturer of the barrel and/or upper he wants to buy for his AR in 5.45?!

EvoXRiley
06-12-2012, 3:32 PM
As I stated above, te the threads are the same as 5.56

bighead
06-12-2012, 3:49 PM
Yes it is for an AR platform in 5.45.Thanks EVO, just wanted to double check.

Fate
06-12-2012, 4:54 PM
So the standard 5.56 brake will work?

On a featureless, it'll get you arrested.

Standard 5.56 flash hiders and Brakes will work.

i run a stag, its LOUD way louder then my Battle comp 2.0 and does its job well

OP is asking about featureless use. Standard 5.56 birdcages and the Battlecomp 2.0 are flash suppressors in CA.

Both are no go on a featureless.

Richard Erichsen
06-12-2012, 6:41 PM
No
The tradition ak74 threads are 24mm
I guess it was to prevent a 5.45mm from being attached to a 30 cal gun

You can remove the front sight block and cut off the threads. This leaves the barrel. You could then thread the barrel to either the ak 74 pattern or the m4 pattern
You might need to turn down the barrels od a few thousands before the m4 die would fit

Nearly right. The AK74/AK100 series barrels are unthreaded. The front sight base is where the muzzle device is threaded to as opposed to the barrel itself, though the front sight base still uses a spring loaded pin that secures the brake and prevents it from backing out. The AK74/AK100 uses 24x1.5 mm RH threaded, whereas the AK47/AKM and oddballs like the Polish Tantal (AK74 base) use 14x1 mm LH threading. Even if they were the same thread pitch, they twist in different directions (The Czech Vz58 used 14x1 RH).

There are adapters selling for $20-$30 that adapt one type of threading to another, allowing AKs to wear inch threaded brakes and flash hiders and vice versa with a different adapter.

R

Army
06-13-2012, 6:18 AM
On a featureless, it'll get you arrested.
I think he meant standard 1/2X28 threaded 5.56 brakes, which are legal on featureless. Not standard issue 5.56 M16 flash-hider/brake.