f> AR-556 vs. M&P Sport II - Page 2 - Ruger Forum

Ruger Forum

AR-556 vs. M&P Sport II

This is a discussion on AR-556 vs. M&P Sport II within the Rifles forums, part of the Rifle & Shotgun Forum category; Originally Posted by garyji Not sure the shrouded/un-shrouded thing would affect most of us. G. With an unshrouded firing pin, the collar on the firing ...


Go Back   Ruger Forum > Rifle & Shotgun Forum > Rifles

Reply
 
LinkBack Thread Tools Display Modes

Old March 19th, 2017, 09:05 AM   #16
 
Join Date: Apr 2014
Location: Wylie, TX
Posts: 334
cyphertext will become famous soon enoughcyphertext will become famous soon enough
Quote:
Originally Posted by garyji View Post
Not sure the shrouded/un-shrouded thing would affect most of us.

G.
With an unshrouded firing pin, the collar on the firing pin is used to cock the hammer. It gets buggered up, and can also wear the retaining pin. A properly shrouded firing pin uses the ramp on the carrier to cock the hammer.

The unshrouded design is a holdover from back in the day when Colt tried to appease the anti gun crowd, with a design intended to keep people from making a full auto rifle. It was politically motivated, not an improvement on design. Since then, Colt and other manufacturers have abandoned the design, but for some reason Ruger decided that was the way to go...



cyphertext is offline  
Advertisements
Old March 19th, 2017, 12:49 PM   #17
 
Join Date: Jan 2015
Location: Indiana
Posts: 177
pblanc is on a distinguished road
The unshrouded firing pin on the Ruger bolt carrier group is more of a potential problem, than a real one, IMO. I know people with AR 556 carbines with high round counts that have had no problems with either the firing pin or the firing pin retaining pin.

A firing pin retaining pin costs $2 or less. It is a good idea to have a spare or two on hand just in case. It is a part fairly easy to loose. Firing pins are not very expensive either, but if the collar on your AR 556 firing pin got significantly beat up, I think the odds are very good that Ruger would send you a replacement for free.

I do agree that a shrouded firing pin is more desirable, but I would not loose any sleep over an unshrouded one.

As for the lined barrel, I have been told by those who should know that an unlined barrel is often more accurate. If you anticipate tromping through the woods in the rain (a possibility if you use the carbine for hunting) a lined barrel might be a significant asset. I prefer the 1:8 twist rate of the Ruger barrel to that of the M&P Sport II, so overall I give the nod to the Ruger barrel.

I also prefer the threaded Delta ring on the Ruger to that of the M&P Sport, even though it is proprietary. On the other hand, I prefer the Magpul MBUS dual aperture rear sight of the M&P to the proprietary single aperture rear sight of the Ruger. I found the stock pistol grip of the Ruger fits my hand a bit better than that of the M&P but that is very subjective (and pistol grips are easily changed).

I have heard many claim that the M&P has a better trigger than that of the Ruger. They both have very basic single-stage, mil-spec triggers. I haven't shot more than a couple of M&P Sports. I found the triggers to be perhaps a little lighter pull.

The bottom line is that these two carbines are really more alike than they are different. Same price range, same carbine-length direct gas impingement system, basic polymer furniture, single-stage mil-spec trigger, etc. Either is a good value for an entry level carbine. Unless you think you might wish to shoot heavy 69 grain+ target loads (in which case the Ruger would be preferable) or varmint loads with very light projectiles (in which case the M&P would be better) I would probably pick the one you can get most cheaply.
pblanc is offline  
Old March 19th, 2017, 01:27 PM   #18
 
Join Date: Oct 2015
Location: Greenville
Posts: 117
Beachcomber86 is on a distinguished road
Just buy one of each! Problem solved.
Beachcomber86 is online now  
 
Old March 19th, 2017, 02:44 PM   #19
 
Join Date: Apr 2014
Location: Wylie, TX
Posts: 334
cyphertext will become famous soon enoughcyphertext will become famous soon enough
Quote:
Originally Posted by pblanc View Post
The unshrouded firing pin on the Ruger bolt carrier group is more of a potential problem, than a real one, IMO. I know people with AR 556 carbines with high round counts that have had no problems with either the firing pin or the firing pin retaining pin.

A firing pin retaining pin costs $2 or less. It is a good idea to have a spare or two on hand just in case. It is a part fairly easy to loose. Firing pins are not very expensive either, but if the collar on your AR 556 firing pin got significantly beat up, I think the odds are very good that Ruger would send you a replacement for free.

I do agree that a shrouded firing pin is more desirable, but I would not loose any sleep over an unshrouded one.
A potential problem that should have been avoided from the beginning. No reason at all to have an unshrouded firing pin. Add to the fact that you can't just buy any standard firing pin to use in the Ruger... only the smaller collar pins... and add in the notched hammer is not recommended for use with some of the .22lr conversions, if you are planning to do that.

No good reason to deviate from standard design in the BCG and FCG in my opinion.

Quote:
Originally Posted by pblanc View Post
As for the lined barrel, I have been told by those who should know that an unlined barrel is often more accurate. If you anticipate tromping through the woods in the rain (a possibility if you use the carbine for hunting) a lined barrel might be a significant asset. I prefer the 1:8 twist rate of the Ruger barrel to that of the M&P Sport II, so overall I give the nod to the Ruger barrel.
Nitriding does not affect accuracy negatively. It is a treatment to the metal, not a coating or lining. I also prefer the 1:8 twist like I have on the Sport I, but real world shooting does not bear out that my 1:8 twist performs any better than an equivalent 1:9 twist barrel with most readily available factory loads.



Quote:
Originally Posted by pblanc View Post
I have heard many claim that the M&P has a better trigger than that of the Ruger. They both have very basic single-stage, mil-spec triggers. I haven't shot more than a couple of M&P Sports. I found the triggers to be perhaps a little lighter pull.
Actually, the trigger in the Sport is not a mil-spec trigger. Same design, but appears to be MIM parts... very functional and reliable though, with typically less grit and breaks cleaner than the mil-spec triggers on my other ARs.

Quote:
Originally Posted by pblanc View Post
The bottom line is that these two carbines are really more alike than they are different. Same price range, same carbine-length direct gas impingement system, basic polymer furniture, single-stage mil-spec trigger, etc. Either is a good value for an entry level carbine. Unless you think you might wish to shoot heavy 69 grain+ target loads (in which case the Ruger would be preferable) or varmint loads with very light projectiles (in which case the M&P would be better) I would probably pick the one you can get most cheaply.
Either one is a good buy at the prices available, but I still prefer the standard parts of the Smith.
cyphertext is offline  
Old March 19th, 2017, 06:22 PM   #20
 
Join Date: Mar 2016
Location: Michigan
Posts: 191
GreyWolf1 is on a distinguished road
It was the 1:8 barrel, forward assist and dust cover of the AR556 (Sport II hadn't come out yet).
GreyWolf1 is offline  
Old March 19th, 2017, 06:42 PM   #21
 
osbornk's Avatar
 
Join Date: Jun 2015
Location: Marion, Va.
Posts: 94
osbornk is on a distinguished road
Knowing nothing about ARs, I recently bought a Sport II based on the past reputation and how long they have been out. It has a lifetime warranty but I know Ruger doesn't have one but they just fix them. I have both Smith and Ruger and I have never had a problem with any of them. The Smith was also $30 cheaper. I like it very much as does my barber does his that chose the Ruger.
osbornk is offline  
Old March 19th, 2017, 06:48 PM   #22
 
ditto1958's Avatar
 
Join Date: Jun 2012
Location: Wisconsin
Posts: 4,083
ditto1958 is just really niceditto1958 is just really niceditto1958 is just really niceditto1958 is just really niceditto1958 is just really nice
Lotsa thoughtful comments here.

In the interest of full disclosure, I bought the AR-556 a little over a year and a half ago. I am very satisfied with it; it has eaten hundreds of rounds of whichever 55 grain ammo happened to be on sale and has not hiccuped once.

At the time I bought my rifle, the Sport II had not come out yet, and the Sport was still expensive compared to the Ruger.

If I were buying today? It'd be a harder choice. The Sport II has a dust cover and forward assist and is usually priced at around $599, same as the Ruger. The Ruger has a nicer pistol grip, a nicer FSB and I really like the delta ring. The Sport II has a nitrided barrel, and also comes with a front sling swivel (with the Ruger you need to add one if you want a sling).

If both rifles cost the same, I suspect I'd lean towards the Ruger. Why? Well, I think I'd be very happy with either one, but in the unlikely event I had an issue with my rifle, I'd much, much rather be working with Ruger customer service than with Smith & Wesson.

Bottom line, though, in my opinion is that both rifles are outstanding values, and I'm not sure you can go wrong either way.
ditto1958 is offline  
Old March 19th, 2017, 06:57 PM   #23
 
weblance's Avatar
 
Join Date: Nov 2011
Location: I Love Daisy Bulldog
Posts: 3,120
weblance has a spectacular aura aboutweblance has a spectacular aura aboutweblance has a spectacular aura about
It came down to customer service for my money. I went with Ruger. There are a few things I didn't like, such as the rear sight with single aperture. The beauty of the AR is, change what you don't like.

That said, I love my AR556. I've never had a malfunction, granted I don't have a high round count yet(around 500). Its very accurate. I do wish the Ruger had a nitrided barrel.

I've changed the hand guard so I could add a red dot at 2 o'clock. I went with an A2 solid stock. I dropped in a Timney Competition 3lb trigger. I opened up the rear sight aperture.

I would have done these things to the S$W as well.
weblance is offline  
Old March 20th, 2017, 03:37 AM   #24
 
Join Date: Jun 2016
Location: Fl
Posts: 113
Sonny82 is on a distinguished road
Quote:
Originally Posted by cyphertext View Post
I would choose the Sport for several reasons...

1. Shrouded firing pin vs. unshrouded on the Ruger
2. Nitrided barrel on the Smith
3. Standard delta ring configuration on the Smith
4. Standard FSB on the Smith

And now the Sport II is offered in a few configurations, to include an optics ready model and one with a Magpul hand guard.

This is why. /Thread
Sonny82 is offline  
Old March 20th, 2017, 04:01 AM   #25
 
Join Date: Apr 2014
Location: Wylie, TX
Posts: 334
cyphertext will become famous soon enoughcyphertext will become famous soon enough
Quote:
Originally Posted by ditto1958 View Post
If I were buying today? It'd be a harder choice. The Sport II has a dust cover and forward assist and is usually priced at around $599, same as the Ruger.
Right now, the Ruger is available online for $464... I've seen the Sport 2 at $500. Even the mil-spec only crowd can't argue that these are not incredible values at these prices.
cyphertext is offline  
Old March 20th, 2017, 09:08 AM   #26
 
Join Date: Jan 2015
Location: Indiana
Posts: 177
pblanc is on a distinguished road
Although out of stock at this vendor, the AR 556 is also now being offered in a Magpul MOE edition:

http://www.cheaperthandirt.com/produ...36676085071.do
pblanc is offline  
Old March 20th, 2017, 09:21 AM   #27
 
Join Date: Aug 2012
Location: Orygun
Posts: 166
Hellgate is on a distinguished road
I have not heard any accuracy comparison between the rifles. Has anyone scoped these rifles and shot some decent ammunition (match ammo or good handloads) over sandbags @100yds? If so, whadja get for groups?
Hellgate is offline  
Old March 20th, 2017, 09:43 AM   #28
 
Join Date: Apr 2014
Location: Wylie, TX
Posts: 334
cyphertext will become famous soon enoughcyphertext will become famous soon enough
Quote:
Originally Posted by pblanc View Post
Although out of stock at this vendor, the AR 556 is also now being offered in a Magpul MOE edition:

http://www.cheaperthandirt.com/produ...36676085071.do
Distributor exclusive...
cyphertext is offline  
Old March 20th, 2017, 10:03 AM   #29
 
Beachcityboy's Avatar
 
Join Date: Mar 2012
Location: Southeast Texas Coast
Posts: 64
Beachcityboy is on a distinguished road
Okay, I'll throw my opinion out there.

I've had an SR556cla for 5 years, and my AR556 since last November.

Believe it or not, for me the AR556 is just as accurate as the SR556. Both shoot beautiful groups with 60 grain Hornady V-Max. Other than cosmetics, the only thing I've done to either to help with accuracy is trigger upgrades. A geissele for the SR556, and an ALG combat trigger for the AR556. I've been very, very impressed with the AR556 !!!

The S&W may be a great gun, but no way I'd trade my AR556 for one.

Beachcityboy is online now  
Old March 20th, 2017, 11:31 AM   #30
 
MOUNTAINEERFAN's Avatar
 
Join Date: Nov 2015
Location: WEST VIRGINIA
Posts: 58
MOUNTAINEERFAN is on a distinguished road
I bought both! I got the AR556 for me and the MP15 Sport 2 for my wife, the only real difference I can see is the Sport 2 has better sights, the MagPul MBUS are a bit nicer than Rugers, IMO you can't go wrong buying either one.....[or BOTH!]
MOUNTAINEERFAN is offline  
Reply

  Ruger Forum > Rifle & Shotgun Forum > Rifles


Search tags for this page

mp 15 sport vs ruger ar 556

,

nato

,

ruger 556 vs mp sport ii

,

s and w sport ll vs ruger 556

Click on a term to search for related topics.

Thread Tools
Display Modes


Similar Ruger Forum Discussions
Thread Thread Starter Forum Replies Last Post
S&W M&P15 Sport II 556 NATO 16" 30 Rd BLK from $489 wikiarms WikiArms.com 0 January 3rd, 2017 02:33 PM
S&W M&P Sport II 556 NATO 16" 30 Rd BLK - $539 Gun.Deals Gun.Deals 0 April 3rd, 2016 07:50 AM
S&W M&P Sport II 556 NATO 16" 30 Rd BLK - $539 Gun.Deals Gun.Deals 0 March 5th, 2016 11:32 AM
Preorder - S&W M&P Sport II 556 NATO 16" 30 Rd BLK - $539 Gun.Deals Gun.Deals 0 February 1st, 2016 09:11 AM
S&W M&P Sport II 556 NATO 16" 30 Rd BLK - $539 Gun.Deals Gun.Deals 0 January 29th, 2016 08:52 PM

Top Gun Sites Top Sites List
Powered by vBulletin 3.8.7
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.1
Copyright © 2006 - 2017 Ruger Forum. All rights reserved.
Ruger Forum is a Ruger Firearms enthusiast's forum, but it is in no way affiliated with, nor does it represent Sturm Ruger & Company Inc. of Southport, CT.