Battle Comp muzzle brake

[Duffy]

BC 2.0

[teamacacia]

definitely time to pick one up!

[Duffy]

I replaced my heavy ass AAC brake with the BC 2.0, it's but a matter of time when I replace all of the muzzle devices on my dozen ARs with one version of BC or another

[kartoffel]

BC 2.0

What's the significance of the longitudinal grooves? Is it just due to a lower tool path between making the gas port cuts, or is that a separate machining operation? If so, why?

On the BC 1.0 the ports break out cleanly to the OD of the comp. On the BC 2.0 they're slightly nestled down into round-bottomed grooves. I'd imagine 2.0 might throw a little more gas fore and aft, rather than radially outwards.

EDIT: Nevermind, I think I answered my own question. See below.

The BC2.0 has the same exterior dimensions as an A2

So the BC2.0 has a slightly larger OD, with the same tool path. Hence the grooves between the gas ports. (But please correct me if I'm wrong!)

[Dennis]

I have a BC 1.0 and 1.5 and they work great, well incredible actually, however with XM193 and Federal AE223 I get an 8" round white flash surrounding the comp every 10 rounds or so... It doesn't really bother me, but it is very noticeable.

Maybe this has been covered in the past 62 pages but I just wanted to see if others have seen this?

Thanks,

Dennis.

[Marty916]

The flutes were added for a number of reasons, one being to provide a small channel for gas to exit forward rather than come up against a blind wall when seated in the primary blast chamber of a suppressor.

As for the occassional increase in flash signature, this is primarily due to inconsistencies in the amount of flash retardant iin the powder, very typical manufacturing variances. There is also a small residual gas charge containing unburned powder that builds up in the system after multiple rounds that ignites once the mixture ratio hits ignition flash point. This disappears when this mixture is consumed and creates the momentary increase in flash. This occurs with any muzzle device, just not as noticable with a dedicated flash hider but is very noticeable when using a suppressor. Hope this makes sense...

[Dennis]

As for the occassional increase in flash signature, this is primarily due to inconsistencies in the amount of flash retardant iin the powder, very typical manufacturing variances. There is also a small residual gas charge containing unburned powder that builds up in the system after multiple rounds that ignites once the mixture ratio hits ignition flash point. This disappears when this mixture is consumed and creates the momentary increase in flash. This occurs with any muzzle device, just not as noticable with a dedicated flash hider but is very noticeable when using a suppressor. Hope this makes sense...

You gotta love a quick reply straight from a manufacturer!

That makes sense, and I do see the same thing from my Vortex's, just smaller. However, with a Vortex my muzzle jumps off the target every time bigger than the size of the occasional flash from my BC

Dennis.

[Marty916]

Intelligent questions always merit an answer!

[kartoffel]

Thanks Marty! Makes sense to leave some room for gas to escape forwards when a suppressor is mounted.

[Gren]

I just bought a blem 1.0 from Rainier this week. Most important part is I love it. I have much better control than I did with the bird cage.

My question is should I be mad about the "gunsmithing" job that was done? I took it to someone because I didn't have a proper vice and wanted it done right. This looks worse than what I could have done.