Home My iTrader Join the NRA Donate to CGSSA Sponsors CGN Google Search
CA Semiauto Ban(AW)ID Flowchart CA Handgun Ban ID Flowchart CA Shotgun Ban ID Flowchart
Go Back > FIREARMS DISCUSSIONS > Centerfire Rifles - Semiautomatic or Gas Operated
Register FAQ Members List Calendar Mark Forums Read

Centerfire Rifles - Semiautomatic or Gas Operated Centerfire rifles, carbines and other gas operated rifles.

Thread Tools Display Modes
Old 10-04-2011, 8:15 AM
smittty smittty is offline
Veteran Member
Join Date: Feb 2008
Posts: 4,905
iTrader: 14 / 94%
Default Shape/geometry of flash hider vs muzzle brake?

My M&P 15 has a muzzle brake that looks very similar to a standard flash hider but it's California compliant so I'm wondering what makes it NOT be a flash hider, does anyone know?

Also, can I modify a standard flash hider to not "hide the flash" so it's just decorative?

Reply With Quote
Old 10-04-2011, 8:30 AM
FatalKitty's Avatar
FatalKitty FatalKitty is offline
Veteran Member
Join Date: Apr 2010
Posts: 2,943
iTrader: 1 / 100%

generally the flash hiders have a completely open end, where the muzzle brakes have the end closed but a hole small enough for just the bullet to pass through.

there are muzzle devices out there that have closed ends but look like a flash hider - if you like the A2 birdcage Midway sells one (can't remember who makes it) that is a bake instead (has the closed end) also Yankee Hill makes their phantom hiders in muzzle brake form as well.
Reply With Quote
Old 10-04-2011, 9:15 AM
basalt basalt is offline
Join Date: Feb 2010
Location: Woodland
Posts: 160
iTrader: 3 / 100%

I'm not expert and hopefully someone with much more knowledge can correct me but this is what I have found here and from reading the regs: Flash hiders and muzzle brakes aren't inherently illegal, or legal. What is illegal is anything that is a flash "suppressor", meaning it reduces or redirects the flash from the shooters line of sight. Doesn't matter what you call it. The only exception seems to be "CA compliant" in which case it is just approved(still not really sure on this?).

That's the final wording anyways. In practice it seems it is a crap shoot, up to the LEO/DA should they get involved, and there apparently is no standard test to determine one way or the other. If they decide it redirects or suppresses flash you are screwed.

I have a muzzle brake with an open end. It is called a muzzle brake by the manufacturer. The bottom of the brake has no ports, the sides and top have ports including one at the very center of the top, so it in essence directs 20%+ MORE flash and gasses into the shooters line of sight so it is pretty clearly not a flash suppressor. But is that just my opinion? What about the LEO that might be at the range next to me?

Reply With Quote
Old 10-04-2011, 9:26 AM
FatalKitty's Avatar
FatalKitty FatalKitty is offline
Veteran Member
Join Date: Apr 2010
Posts: 2,943
iTrader: 1 / 100%

First off. there is not such thing as "CA approved" muzzle device. Some sites or manufactures may say that. But all muzzle devices (save for flash suppressors) are legal here.

there ARE out there some muzzle devices that both suppress flash and act as a muzzle brake. the BattleComp is one of them.

there are also what are called "compensaters" which is what you have (this directs gasses up and to the sides to limit muzzle climb)
they are not to be confused with muzzle brakes. a break very specifically brakes all the gas around the bullet... so it will NOT have an open end to it.
Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -8. The time now is 7:23 AM.

Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Proudly hosted by GeoVario the Premier 2A host., the 'Calguns' name and all associated variants and logos are ® Trademark and © Copyright 2002-2018, an Incorporated Company All Rights Reserved. and The Calguns Foundation have no affiliation and are in no way related to each other.
All opinions, statements and remarks made by on this web site and elsewhere are solely attributable to