Home Forums Classifieds Blogs Today's Posts Search Social Groups


Glock Talk
Welcome To The Glock Talk Forums.
Thread Tools Display Modes
Old 11-14-2012, 21:20   #1
Registered User
Join Date: Apr 2008
Posts: 56
Magpul MBUS for M&P15 OR?

Every thread that mentions the MBUS sights say not to put them on a gas block. I like the MBUS sights and I am wondering how much shooting I would have to do before I have to worry about that much heat. Also since I am wanting this for the M&P15 OR, would the sights be level as far as the gas block and the rail being the same height?
Robreynolds is offline   Reply With Quote
Old 11-14-2012, 21:23   #2
Senior Member
Join Date: Jun 2009
Location: Midwest
Posts: 3,450
Do it then let us know how it goes.
mjkeat is offline   Reply With Quote
Old 11-14-2012, 21:32   #3
WoodenPlank's Avatar
Join Date: May 2010
Location: NW Florida
Posts: 7,670
If I remember right, the M&P OR has a same-plane gas block.

Not sure how much heat it would take to cook an MBUS front sight, but even Magpul says not to use them on a railed gas block.
Never argue with an idiot. They will drag you down to their level and beat you with experience.
WoodenPlank is offline   Reply With Quote
Old 11-14-2012, 21:34   #4
Silver Membership
Senior Member
Cole125's Avatar
Join Date: Apr 2008
Location: Far West, USA
Posts: 7,581
Don't do it. Buy Troy BUIS, and be done with it.
Cole125 is offline   Reply With Quote
Old 11-14-2012, 22:46   #5
Made in Austria
Senior Member
Made in Austria's Avatar
Join Date: Jan 2011
Location: Las Vegas, NV
Posts: 1,704
I was in the same boat. Till I decided to mount Troys on mine. To put a plastic sight on a gas block is just not right and is a monkey business. Troys are a little pricy but well worth the money. They are very robust and well made. I promise you, you will love the troys on your rifle. The magpul sights are excellent, but not on a gas block.

Last edited by Made in Austria; 11-14-2012 at 22:46..
Made in Austria is offline   Reply With Quote
Old 11-14-2012, 23:02   #6
Senior Member
bigmoney890's Avatar
Join Date: Nov 2011
Location: Boone, NC
Posts: 1,449
Daniel Defense fixed front sights are only about $20 more and are gas block safe.

I'd go with this or one of the above mention metal sights, unless you absolutely have to have a folding polymer sight.
"you cannot invade the mainland United States, there would be a rifle behind every blade of grass..."

Custom Survival Bracelets
bigmoney890 is offline   Reply With Quote
Old 11-15-2012, 06:11   #7
Senior Member
Join Date: Sep 2009
Location: U.S.A.
Posts: 14,399
I have the DD on my M&P OR. It works but looks cheesy because it overhangs front or back of the block.

Last edited by cowboy1964; 11-15-2012 at 06:11..
cowboy1964 is offline   Reply With Quote
Old 11-15-2012, 09:17   #8
Senior Member
plouffedaddy's Avatar
Join Date: Apr 2011
Location: Carolina
Posts: 2,194
There's a good thread/test over on TFL by Metal God where he tested this; a quick search should turn it up.

Quick summary of the findings--eventually they'll melt but it does take a bit of shooting to make tit happen.

FWIW, I put MI metal sights on my gas block to avoid this...
Plouffedaddy's Youtube Channel
Certified Glock Armorer
plouffedaddy is offline   Reply With Quote
Old 11-15-2012, 09:47   #9
Matthew Courtney
CLM Number 285
Instructor #298
Join Date: Oct 2002
Location: Lake Charles
Posts: 5,855
Yankee Hill flip up front sight $65.
You will never begin in the fight you have planned for. You will begin in the fight the other guy has planned for. Retreat in a manner that leads him into your fight should he press his attack.
Matthew Courtney is offline   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 -6. The time now is 19:02.

GT Wiki
GT Blogs
Social Groups

Users Currently Online: 1,356
408 Members
948 Guests

Most users ever online: 2,244
Nov 11, 2013 at 11:42