• Update – 12:30 PM EST
    Attachments are now working, and all members can once again upload files.
    We are currently testing URL redirects and other miscellaneous features across the site.
    Thank you for your continued patience and support during this migration.

    Prefer a darker look? You can switch between light and dark modes in your account settings:
    smith-wessonforum.com/account/preferences

Which M&P AR 15 is gas Piston Driven?

S

saltair

Well-known member
Joined
Aug 5, 2012
Messages
128
Reaction score
45
Location
Delaware
Looking to get another AR15 and would like to get a Gas Piston driven model.

I have the Sport which is Direct Impingement gas driven and I have had no problems.

Just curious if M&P makes a Piston model.
 
I have owned a M&P15PS for about 6 years. It is by far the best semi-auto rife I have ever owned and have no intentions of letting it go. S&W stopped selling the rifle a few years back, but if you have a lower you can still buy the piston upper, but it is pricey.

Product: M&P15 PS Upper Assembly

Many other manufacturers are selling piston AR-15's, Ruger for one. My wife has a DI AR-15 and sweet talks me into cleaning it for her. It takes me a good hour or so to clean it, especially after 1000 rounds or so. I have never spent more that 1/2 hour cleaning mine, usually can do it in 15 minutes.

I expect you are going to see lot of posts on your thread bad mouthing piston guns. Most complainers have never held one, much less fired one, so they are just repeating things they have read before. One complaint is that piston guns are "too heavy", which is not true. My piston rod, spring and gas valve weigh 6 ounces which is a heck of a lot less than the junk guys hang on their rails.

The other complaint is that piston guns are not as accurate as DI guns. To that I say beat this target shot at 100 yards:



Good luck with your search...and no, mine is not for sale!
 
saltair said:
Looking to get another AR15 and would like to get a Gas Piston driven model.

I have the Sport which is Direct Impingement gas driven and I have had no problems.

Just curious if M&P makes a Piston model.
Click to expand...

S&W no longer makes the piston model.

Gas piston ARs are a bad idea. The piston causes the bolt carrier to damage the inside of the receiver over time and the damage is not repairable.

Colt solved the problem with its articulating link piston system, which is LE6940P, if you cannot buy the 14.5 inch model (P0923) or the 10.3 inch model (SCW0921P).

In addition, all this bull you read about how unreliable the gas piston system is in the real world, understand that it is just that - a load of bull.
 
shawn mccarver said:
Gas piston ARs are a bad idea. The piston causes the bolt carrier to damage the inside of the receiver over time and the damage is not repairable.
Click to expand...

I probably have between 3-5000 rounds through mine, all my own reloads. Not sure how many rounds it takes to start seeing receiver damage, mine still basically looks like new. No damage or extreme wear in the buffer tube either. Not trying to start an argument, just sayin S&W got it right in their design......

saltair....did a quick search for you and found this. A little outdated, but might be helpful.

Top 20 Next-Gen Piston-Driven ARs

Part 6: The Best Survival Carbine (AR Style Rifle)
 
Last edited:
Six of one half dozen of the other really. Both Direct Impingement and piston have their issues. One craps where it eats and the other beats the **** out of the bolt carrier. They both get dirty and need maintenance, the location of where the most carbon is changes, that's all.

If one was really superior to the other, it would have shown in the market and what the military forces of the world use. It's pretty much a mix world wide, so....
 
Get a Rock River Arms Operator 3 (gas piston) cost $1000 its the best of the 3 AR's that I have.
 
You must log in or register to reply here.

Similar threads

cporfe
Help Please: M&P 15 Serial Number TE836XX
Replies
1
Views
422
hardluk1
H
M
  • Locked
WTS S&W M&P15 Gas Piston Upper Complete NEW
Replies
0
Views
279
Mr6actual
M
P
M&P Sport II
Replies
2
Views
239
ColbyBruce
C
M
Sport 3 "Compliant" stock replacement
Replies
12
Views
2K
mscampbell2734
M
M
M&P 15 Sport ejection issue
Replies
2
Views
516
hardluk1
H

Latest posts

Back
Top