Smith & Wesson Forum

Go Back   Smith & Wesson Forum > Smith & Wesson Rifles and Shotguns > Smith & Wesson M&P15 Rifles
o

Notices

Smith & Wesson M&P15 Rifles Dedicated to the Smith & Wesson M&P-15 Rifles


Reply
 
Thread Tools Display Modes
  #1  
Old 05-25-2017, 11:35 AM
Travlgent Travlgent is offline
Member
M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment  
Join Date: May 2017
Posts: 4
Likes: 0
Liked 0 Times in 0 Posts
Default M&P 15 Sight Alignment

Greetings--newbie here and first time poster, so please be gentle. I bought a nice, used M&P 15 last year and cannot get it sighted in without maxing the rear sight down and adjusting the front sight way above flush, to the point that it wobbles in the recess. I've started over three times and always have the same result when I get my groups dialed in. USMC 83-91, so I'm not totally unfamiliar with this design. Thoughts?

Last edited by Travlgent; 05-25-2017 at 11:38 AM.
Reply With Quote
  #2  
Old 05-25-2017, 11:43 AM
cyphertext cyphertext is offline
US Veteran
M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment  
Join Date: Feb 2012
Location: Wylie, TX
Posts: 4,670
Likes: 1,075
Liked 3,823 Times in 2,040 Posts
Default

Can you give us more info? What model M&P 15? What distance are you trying to zero at? Since you said "maxing the rear sight down", I am assuming carry handle sight?
Reply With Quote
  #3  
Old 05-25-2017, 12:24 PM
hdrolling's Avatar
hdrolling hdrolling is offline
US Veteran
M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment  
Join Date: Dec 2016
Location: Grays Creek, NC
Posts: 253
Likes: 18
Liked 138 Times in 91 Posts
Default

No wiggle in the barrel is there?
__________________
M&P15 sport II, Retired Army
Reply With Quote
  #4  
Old 05-25-2017, 12:39 PM
Travlgent Travlgent is offline
Member
M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment  
Join Date: May 2017
Posts: 4
Likes: 0
Liked 0 Times in 0 Posts
Default

Quote:
Originally Posted by cyphertext View Post
Can you give us more info? What model M&P 15? What distance are you trying to zero at? Since you said "maxing the rear sight down", I am assuming carry handle sight?
Carry handle sight maxed at bottom, yes. I'm using standard 25m targets at 30 paces. I had the same issue when I put rounds on target at 100m. My rifle is the 1 in 7 twist version.

Last edited by Travlgent; 05-25-2017 at 12:42 PM.
Reply With Quote
  #5  
Old 05-25-2017, 12:40 PM
Travlgent Travlgent is offline
Member
M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment  
Join Date: May 2017
Posts: 4
Likes: 0
Liked 0 Times in 0 Posts
Default

Quote:
Originally Posted by hdrolling View Post
No wiggle in the barrel is there?
Everything is tight, groups are good.
Reply With Quote
  #6  
Old 05-25-2017, 01:17 PM
cyphertext cyphertext is offline
US Veteran
M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment  
Join Date: Feb 2012
Location: Wylie, TX
Posts: 4,670
Likes: 1,075
Liked 3,823 Times in 2,040 Posts
Default

Quote:
Originally Posted by Travlgent View Post
Carry handle sight maxed at bottom, yes. I'm using standard 25m targets at 30 paces. I had the same issue when I put rounds on target at 100m. My rifle is the 1 in 7 twist version.
Fixed A2 front sight? I wonder if it could be as simple as the front sight post has been replaced previously... perhaps you need a taller one? Also assuming that the front sight assembly has not been replaced... Is it F marked?
Reply With Quote
  #7  
Old 05-25-2017, 04:07 PM
hdrolling's Avatar
hdrolling hdrolling is offline
US Veteran
M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment  
Join Date: Dec 2016
Location: Grays Creek, NC
Posts: 253
Likes: 18
Liked 138 Times in 91 Posts
Default

Quote:
Originally Posted by Travlgent View Post
My rifle is the 1 in 7 twist version.
I didn't know any of the Sports had a 1-7 twist?

I thought the 1st GEN sport had a 1-8 and the newer sport II has a 1-9 twist.
__________________
M&P15 sport II, Retired Army
Reply With Quote
  #8  
Old 05-25-2017, 04:12 PM
cyphertext cyphertext is offline
US Veteran
M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment  
Join Date: Feb 2012
Location: Wylie, TX
Posts: 4,670
Likes: 1,075
Liked 3,823 Times in 2,040 Posts
Default

Quote:
Originally Posted by hdrolling View Post
I didn't know any of the Sports had a 1-7 twist?

I thought the 1st GEN sport had a 1-8 and the newer sport II has a 1-9 twist.
He didn't say Sport... I'm guessing it is this one... but it might be an archived model no longer made, depending on how old it is.

M&P(R)15 1 in 7" Twist | Smith & Wesson
Reply With Quote
  #9  
Old 05-25-2017, 05:15 PM
TX-Dennis TX-Dennis is offline
Member
M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment  
Join Date: Mar 2014
Location: The Rugged Llano Estacado
Posts: 3,601
Likes: 21,388
Liked 5,423 Times in 2,235 Posts
Default

Is the carry handle mounted properly? Fully engaged in the rail slots, well tightened. You probably already checked that being a Marine and all.

Maybe the carry handle is defective? Try taking it off and trying a different rear sight.

Is the front sight original or has it been replaced?

I'm no expert, but either the front sight or the rear sight has to be the issue assuming everything else is right.
Reply With Quote
  #10  
Old 05-25-2017, 07:44 PM
Disabled1 Disabled1 is offline
Banned
M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment  
Join Date: Apr 2015
Location: South Of The North Pole
Posts: 1,257
Likes: 491
Liked 710 Times in 424 Posts
Thumbs up

Quote:
Originally Posted by cyphertext View Post
He didn't say Sport... I'm guessing it is this one... but it might be an archived model no longer made, depending on how old it is.

M&P(R)15 1 in 7" Twist | Smith & Wesson
IMO, I think this is the BEST M&P that S&W has ever made.
Reply With Quote
  #11  
Old 05-25-2017, 08:49 PM
hdrolling's Avatar
hdrolling hdrolling is offline
US Veteran
M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment  
Join Date: Dec 2016
Location: Grays Creek, NC
Posts: 253
Likes: 18
Liked 138 Times in 91 Posts
Default

Quote:
Originally Posted by cyphertext View Post
He didn't say Sport... [/url]
Yup, totally missed that.
__________________
M&P15 sport II, Retired Army
Reply With Quote
  #12  
Old 05-25-2017, 09:43 PM
Travlgent Travlgent is offline
Member
M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment  
Join Date: May 2017
Posts: 4
Likes: 0
Liked 0 Times in 0 Posts
Default

As I mentioned, I bought it used. It is NOT a Sport model. My 1:7 twist was determined by the best research I could do at the time. I considered the possibility of the front sight being replaced. Any info on sight posts of various heights would be helpful.
Reply With Quote
  #13  
Old 05-25-2017, 11:42 PM
cyphertext cyphertext is offline
US Veteran
M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment M&P 15 Sight Alignment  
Join Date: Feb 2012
Location: Wylie, TX
Posts: 4,670
Likes: 1,075
Liked 3,823 Times in 2,040 Posts
Default

Quote:
Originally Posted by Travlgent View Post
As I mentioned, I bought it used. It is NOT a Sport model. My 1:7 twist was determined by the best research I could do at the time. I considered the possibility of the front sight being replaced. Any info on sight posts of various heights would be helpful.
Is the barrel marked 1:7? It should be marked. Can you take a pic of the rifle and post it here?
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Shield 9mm Sight Alignment Dippah Smith & Wesson M&P Pistols 9 01-16-2016 10:20 PM
sight alignment hog plunger Smith & Wesson SD & Sigma Pistols 8 11-20-2015 12:33 AM
Sight alignment question - need your help please. Spfoley45 Smith & Wesson M&P15 Rifles 2 07-28-2013 09:27 AM
New (to me) 64-2 sight alignment issue? 4507CAMS S&W Revolvers: 1980 to the Present 8 05-06-2011 02:56 PM
629-1 6" sight alignment Adky S&W Revolvers: 1980 to the Present 5 04-25-2011 09:02 PM

Powered by vBadvanced CMPS v3.2.3
smith-wessonforum.com tested by Norton Internet Security smith-wessonforum.com tested by McAfee Internet Security

All times are GMT -4. The time now is 05:03 AM.


Smith-WessonForum.com is not affiliated with Smith & Wesson Holding Corporation (NASDAQ Global Select: SWHC)