S&W M&P15 PS and PSX (piston AR-15)
This year Smith & Wesson have launched the M&P15 PS and PSX piston operated AR-15 rifles.
M&P15 PSX
The only difference between the PSX and PS is that the PSX features a Troy 7″ modular quad rail handguard.
M&P15 PS model and Piston Operating System
Photo ⓒ Remigiusz Wilk (REMOV). Used with permission.
Specs:
Barrel Length: 16″
Barrel Twist: 1 in 9″
Overall Length: 35″ Extended/32″ Collapsed
Stock: Collapsible 6-position
Weight: 6.5 lbs.
Finish: Hard Coat Black Anodized
I do not know the MSRP on either model.
What kind of piston system is it? Is it S&W’s own design, or are they just using some else’s?
tom, I wondered that myself. I don’t know.
It looks allot like my adams arms system.
I have one of the early ones and have about 6k rounds through it with no hick ups.
Moe
it looks to me like the hk-ish (i don’t know to whom to properly address the credit, but it looks like the system they have on the 416) gas tappet system. i would explain it, but A) i don’t clearly remember how it works and i don’t want to be corrected to death, and B) techincal jargon is definitely not my gig (example: i’m pretty sure the short whosit directs the gas onto the long piston-y thingy, which then contacts an open port on the bcg, cycling the weapon.)
further: i hope this thing sells like mad, and not only out-sells but embarrasses hk. and that’s coming from a long time hk fan/apologist who is, finally, fed up. good thing they make good handguns.
My bet is Adams Arms: http://www.adamsarms.net
Looks identical to mine.
SGC
It IS a modified Adams Arms design. I talked to them at the SHOT Show, and Adams supplied the original design with a few mods: “skis” on the back of the bolt carrier to prevent or reduce the propensity of the bolt carrier to wear out the buffer tube, a unitary bolt carrier (no bolted-on key where the rod impacts) and the block will be pinned on. The S&W rep said that the pinning of the block is more of a sales issue than a real mechanical upgrade.
MAJ, thats for the info.When you say a sales issue do you mean they just want to differentiate themselves from the standard adams pistol system?
I just purchased a S & W AR 15 Full rails end to end 16″ barrel and collapsable stock. Ive been wondering about all of the talk between which is better, the new piston or the old gas tube, any thoughts? —-Oh I also put an EOTech on top with a 5x magnifier and harris type bipod, still havent taken it to the range yet am getting grins just looking at it so far.
Steve
The S&W M&P15 PS and the M&P15 PSX use the Adams Arms gas piston design under licence, but the pistons are made by S&W. You can learn more about the piston at the following link.
http://www.adamsarms.net/
I would buy this if it came in 6.8×43.
I’ll bet this will be S&Ws rifle in the Army carbine study next October.
Is it compatable with a 6.8 bolt?
the maj. is zeroing in. early 60s amalite introed ar18 into the sys. simaler gas push rod,but after patents changed hands the military & colt went with the standard gas sys. as we know it.
To answer Steve’s question, it’s not about differentiation as far as pinning the block. They just believe the perception that pinned blocks are less likely to loosen is worth the $ in the target customer’s eyes. Because of that, even though they don’t think it is necessary from a reliability standpoint, they’re going to do it anyway.
Is there a .22 conversion for this gun?
Spikes Tactical has a conversion kit for the .22.
Ok thanks. Is that the only company that does?
Assuming that the S&W use standard BCGs like everything else, any standard blowback operated AR 22LR conversion SHOULD work, as I understand it. We’ve had 22LR conversion units for years. I used one in ROTC in the 90s in college.
Note that you will probably have to remove the op rod if you’re using a 22LR conversion unit, as I’m guessing it would strike the conversion unit during firing, or even not allow it to be installed. It comes out thru the gas block, and you can replace the gas plug assy and put it in the closed position when you’re using the 22LR conversion, and replace the op rod thru the gas block when done. At the very least you’ll need to put the gas plug assy in the off position to prevent the op rod from striking the conversion unit.
I just bought a Model M&P15OR Rifle .223 do you think S&W will sell a conversion kit, from gas to piston?
I wasn’t having any luck finding this rifle at my local gun shops, so I called S&W direct. Apparently this won’t be available for sale until the end of November 2009.
Talldog, thanks for the info.
No problem Steve, this looks like a nice rifle and has got some good reviews. I just wonder what the MSRP is going to be?
Talldog, it will be interesting to see what the price is.