M&P Barrel Suggestions - Page 2 - MP-Pistol Forum

M&P Barrel Suggestions

This is a discussion on M&P Barrel Suggestions within the MP Full Size Pistols forums, part of the Smith & Wesson MP Forum category; I am thinking of putting a 5 in 40 to 9 conversion barrel into my 4.25 m&p 40 core. Will it work? Or is it ...


Go Back   MP-Pistol Forum > Smith & Wesson MP Forum > MP Full Size Pistols

Reply
 
LinkBack Thread Tools Display Modes
Old December 6th, 2016, 08:28 AM   #16
Junior Member
 
Join Date: Dec 2016
Location: detroit
Posts: 1
can i and should I

I am thinking of putting a 5 in 40 to 9 conversion barrel into my 4.25 m&p 40 core. Will it work? Or is it better to get the right length unported. Thanks guys.
DEHUC is offline  
Old December 7th, 2016, 06:11 AM   #17
Senior Member
 
PaPow's Avatar
 
Join Date: Jul 2016
Location: NY
Posts: 1,315
These add on red dots are pretty close to the breech... i suspect what is happening is that the smoke is coming from the breech as it opens, then sprays on the glass. Take into consideration too, the loaded chamber slot is open right in front of the glass sights too. You will get smoke blowing up thru that as well. If you`re using dirty ammo, your going to get alot more smoke on the glass. If you want to rule out the lose primer leaking, nail polish the primer to seal it up... but i`ll bet that wont fix the problem. I`m sure there are some slow motion vids on youtube that would show breech gas escaping and might help explain why the glass sights get smoked up. Of course, this is my opinion, so dont be to harsh on me about this subject...lol. If i`m wrong on my opinion, i`ll be the first to say so.

EDIT:
I would also like to add... loose chambers dont seal well... this will always dirty up things very quickly.
And weak ammo wont seal well in the chamber either... so theres more reason you get smoked glass.

Last edited by PaPow; December 7th, 2016 at 06:42 AM.
PaPow is offline  
Old December 7th, 2016, 05:47 PM   #18
Member
 
Join Date: Jul 2014
Location: east tennessee
Posts: 112
Quote:
Originally Posted by DEHUC View Post
I am thinking of putting a 5 in 40 to 9 conversion barrel into my 4.25 m&p 40 core. Will it work? Or is it better to get the right length unported. Thanks guys.

get the correct length barrel as the longer barrel will not give accurate positioning in the front of the slide.
donhudd is offline  
 
Old December 8th, 2016, 06:27 AM   #19
Senior Member
 
PaPow's Avatar
 
Join Date: Jul 2016
Location: NY
Posts: 1,315
Quote:
Originally Posted by donhudd View Post
get the correct length barrel as the longer barrel will not give accurate positioning in the front of the slide.

CORRECT....!!!! Most barrels have a tapered muzzle. Most ARE fitted.
PaPow is offline  
Old December 19th, 2016, 07:20 AM   #20
Member
 
Join Date: Nov 2006
Location: Terrace, B.C., Canada
Posts: 362
I put the stock 1 - 10 twist barrel in my Pro 9MM and noticed an immediate improvement in accuracy over the 1 - 18 twist the gun came with.. Not sure I would consider an after market barrel given the gun from a rest is far more accurate than I am free style. 15 yards the gun just blows away a 1" circle and I can't hold any better than that.

IIRC I only paid $85Cdn for the barrel installed by the Canadian service centre.

Take care

Bob
robertbank is offline  
Reply

  MP-Pistol Forum > Smith & Wesson MP Forum > MP Full Size Pistols

Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
Threaded barrel for CA M&P 22 dudley337 MP Full Size Pistols 0 September 7th, 2016 06:17 PM
Apex barrel in M&P 40? breyton490 MP Gunsmithing 6 August 22nd, 2016 11:25 AM
M&P 9mm 4.25" brand new barrel never used OEM Barra1023 Classifieds 2 August 22nd, 2016 04:17 AM
Brand New Storm Lake 357 Sig barrel - 5" M&P slide - $130 shipped! WICKED07 Classifieds 2 July 1st, 2016 07:03 AM



Powered by vBulletin 3.8.7
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.6.1
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright © 2006-2012 MP-Pistol. All rights reserved.
MP-Pistol is a M&P pistol enthusiast forum, but it is in no way affiliated with, nor does it represent Smith & Wesson Holding Corp. of Springfield, MA.