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View Full Version : what brand model gas piston uppers do you have or whats your opinions?


1xoutlaw
06-03-2012, 12:56 PM
Always great to get fellow calgunners to chime in on something when i want answers. Im looking to buy a gas piston upper and sell my stag 2ht. Is there a specific brand and model you could recommend?

thanks

NSR500
06-03-2012, 12:58 PM
LWRC

/Thread

1xoutlaw
06-03-2012, 1:01 PM
i originally wanted the lwrc m6a2, but after losing my job i couldnt afford it anymore

NSR500
06-03-2012, 1:09 PM
Have a garage sale and save up for it.

1xoutlaw
06-03-2012, 1:14 PM
whats this i see people all hyping up on the adams arms evo? is that the new "IN" thing?

NSR500
06-03-2012, 1:17 PM
AA stuff is good and affordable which is why people hype it up.

SOCAL-PRINCE
06-03-2012, 1:36 PM
LWRC M6A2 all day! It's accurate, reliable, and easy as hell to maintain. Its well worth it. Save up for it man.
I also have a Stag model 8 and it and sometimes I wonder why I spent the money on a LWRC. It's been just as awesome. Just my .02

nitroxdiver
06-03-2012, 2:00 PM
I have the Hk mr556 complete rifle, but the upper can be bought seperately. It's Ubber expensive, and very front heavy. I like it and it's super well made, but would prefer if it had the 416 barrel instead. It functions flawlessly, and is a breeze to maintain. I do not prefer it over a DI gun, but wanted a piston AR in the collection so I could have experience with one.

I have heard really good things about the LWRC, but don't own one so can't comment further.

Munny$hot
06-03-2012, 2:28 PM
IMHO not worth the weight over DI rigs

MrPlink
06-03-2012, 2:29 PM
Lwrc for sure. Hk and LMT are worth mentioning as well, but also not cheap.

NSR500
06-03-2012, 2:31 PM
IMHO not worth the weight over DI rigs

FUD...

We're not talking about a heavy *** POF unit here. The LWRC units aren't much different in weight over a DI gun.

bighead
06-03-2012, 3:28 PM
I love my Sig 516.I found no real reason to spend more on anything else.

bighead
06-03-2012, 3:34 PM
JFZ3yUMH5IA

bighead
06-03-2012, 3:35 PM
I've also heard good things about Huldra piston uppers.

georound1
06-03-2012, 3:38 PM
I have 3 LWRC uppers. All work very well and considering the barrel profile, not heavy. The piston and rod can't weigh more than a couple of ounces. If you buy them used, great bang for the buck.

bighead
06-03-2012, 3:39 PM
WWW.huldraarms.com

6mmintl
06-03-2012, 5:47 PM
If they were more accurate then a DI gun I would suspect they would be a dominent rifle in HP shooting instead of bling boasting.

The design is primarily for COMBAT shooting and MTBF statistics.

TZL
06-03-2012, 6:39 PM
Lmt, lwrc, pws, Adams arms, addax

Sunday
06-03-2012, 6:43 PM
Can't see the worth of a piston kit.

ramathorn
06-03-2012, 7:08 PM
Mine sports a CMMG piston upper. Operates flawlessly, no issues with brass or steel case ammo, it'll eat anything I feel it.

CIV Tactical
06-03-2012, 7:27 PM
you can always get a conversion kit as well and just convert the upper you have now and save yourself a bunch of cash.

Droppin Deuces
06-03-2012, 8:01 PM
I've also heard good things about Huldra piston uppers.

They're made by Adams Arms.

MUKAK
06-03-2012, 8:05 PM
Mine sports a CMMG piston upper. Operates flawlessly, no issues with brass or steel case ammo, it'll eat anything I feel it.

i also have a CMMG piston upper and its the best AR upper i ever had.. never any problems and hardly ever get a foul.. 90% of the ammo shot tru it is Wolf ( 3000 rounds total)

in my book CMMG and AA is the best there is.. other kits are waaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaay to overpriced

RDT
06-03-2012, 9:56 PM
Heard good things about Adams Arms. Personally I'd save and get the LWRC.. But thats just what I have heard, all my AR platforms are DI set ups..

ott1
06-03-2012, 10:20 PM
M6A3. I prefer the midlength over carbine piston.

Ak707
06-03-2012, 11:51 PM
Sig516 ftw!!

1xoutlaw
06-03-2012, 11:59 PM
LWRC must be good if everyones saying good stuff about them! Now what about a LWRC M6a2 vs scar 16?

KillZone45
06-04-2012, 2:46 AM
Running a full LWRC REPR 16"

Solidux
06-04-2012, 3:09 AM
Anyone try the CMMG piston kits?

m98
06-04-2012, 4:55 AM
Imo, for the price of a piston upper, i'd rather just get a nice di upper and use the rest of money for xtra ammo or tacticool stuff

KMosley
06-04-2012, 8:02 AM
LWRC will never fail, I own three of them and have the fourth on the way. I have fired other piston guns and can assure you any decent piston system will do the trick. But on the other hand I have yet to discover a company which provides customer service and innovation on the level of LWRC. They really deliver!

sonnyt650
06-04-2012, 8:29 AM
I have an AA mid-length kit and a Bushmaster carbine kit -- both well worth the money I put into them, though the AA kit was a little cheaper and fits great under a DD Omega mid-length rail. That rifle shoots pretty well at 50 yards w/ a Bushnell red dot, don't know how well since I have no magnification on it. Just yesterday my brother-in-law was commenting how my non-piston AR (haven't cleaned it for a couple of range trips :eek:) has a hard-to-charge bolt, think that's just the carbon buildup in the bolt carrier/bolt/receiver -- it does happen as much as some of y'all deny it.

bighead
06-04-2012, 1:56 PM
LWRC must be good if everyones saying good stuff about them! Now what about a LWRC M6a2 vs scar 16?

Just a heads up, the Sig 516 is half the price of the LWRC.I heavily doubt anyone can factually justify the higher price of the LWRC.I payed 1270 before tax and dros for my Sig.

CSI304
06-04-2012, 2:34 PM
I have pretty good experience with the new PWS piston rifles, they are pretty reasonably priced.

SFgiants105
06-04-2012, 2:39 PM
Sig 516 looks tight. It seems that piston ARs are going to be dropping in price over the next decade as they become more common; I wouldn't even be surprised if they became standard within that amount of time

Arnelcheeze
06-04-2012, 3:54 PM
Stag 8 and its runs great!

bigdawg86
06-04-2012, 5:20 PM
Adams Arms! This is what I have... friggen love it!

http://www.adamsarms.net/details.asp?sku=UA-16-M-TE-556

stormvet
06-04-2012, 5:54 PM
I have both the Adams Arms upper midlengh and a 14.5 side charging Addax/PWS upper. Both have worked extremely well for me, but I have to admit my DI gun is more accurate. But maybe thats because it has a 20" heavy barrel.:shrug:

Chondro
06-04-2012, 6:03 PM
Anybody have any experience with the adcor system?

1xoutlaw
06-04-2012, 6:12 PM
Adams Arms! This is what I have... friggen love it!

http://www.adamsarms.net/details.asp?sku=UA-16-M-TE-556

that looks friggin awesome!

rogervzv
06-04-2012, 6:29 PM
that looks friggin awesome!

Wow, that Adams upper looks nice! But I got my whole Ruger SR556E for about the same price. Love the piston OS! Makes maintenance a snap.

http://i14.photobucket.com/albums/a331/Roger54/Gun%20Stuff/DSC_0596.jpg

NeoGeo630
06-05-2012, 8:41 PM
I thought I read a while back that there were issues with LWRC gas piston rifles? Was that back in the day? Seems everyone is touting LWRC to be one of the best. Is it hit/miss or fairly consistent nowaday?

jkonquer
06-05-2012, 8:52 PM
If you have the money, get LWRC ~2000
if you don't, get stag or adams arms ~1200
If you just want to try out some piston AR, get a Adams Arms piston conversion kit ~260. and if you don't like it, you can always sell them. kit includes everything you need to convert into a piston operated rifle.

I gotta admit, Cleaning is so breeze with piston kit. i hardly ever clean the BCG, only the piston rod

here is my stag.
http://i7.photobucket.com/albums/y268/jkonquer/ea7342be.jpg

FX-05 Xiuhcoatl
06-05-2012, 9:12 PM
this post just made me want a piston AR

weespeed
06-05-2012, 9:39 PM
Here's mine..


Sent from my cm_tenderloin using Tapatalk

slappomatt
06-05-2012, 9:42 PM
IMHO not worth the weight over DI rigs

+1 answer in search of a problem.

Gruber51
06-05-2012, 9:44 PM
You have experience with stag stick with it. Love my stag 8. It's one of the tightest shooting ar's I own and bolt assembly stays clean and cool.

Wise man once said don't cr@p where you feed.

1xoutlaw
06-06-2012, 12:39 AM
alot of u guys have very nice AR's

rogervzv
06-06-2012, 7:04 AM
+1 answer in search of a problem.

The DI system puts a tremendous strain on the bolt carrier group of an AR. When I was in the Army almost 100% of our (high) rate of unserviceable M16s was caused by failures of the BCG. The piston system solves that. No one who has ever been in charge of M16 maintenance would say that the Direct Impingement system is not a problem. It is.

Cleaning a piston rifle is just so freakin' easy! The bolt carrier group is pristine; the difference truly is night and day.

BHPFan
06-06-2012, 7:30 AM
IMHO:

If money is no problem, then in order: HK, LWRC and LMT MRP CQB. The LMT is the arguably the least pricey of the three, but the most well-rounded in my opinion as you can switch from GP to DI or from 5.56 to 6.8 and viceversa.

If you want affordable, then CMMG/Stag (same system) or Adams Arms or Ruger and maybe SIG.

If you don't mind the wait and a good GPU for the money, then Addax, which it is what I got. It takes a while to wait right now as there is currently a shortage of AR parts everywhere (Obama scare 2.0) and Addax is trying to fill out all kinds of orders (DI, GP, 308 ARs) for a lot of people (LE and civvies), but in my opinion, they are really worth the wait as I am extremely happy with it.

Capita159
06-06-2012, 7:32 AM
Nice set up jkonquer.
I run a Adams piston kit on my gun. It does not add a lot of weight on the gun. The cleanness of the carrier is worth over a DI IMHO.

BHPFan
06-06-2012, 7:38 AM
The DI system puts a tremendous strain on the bolt carrier group of an AR. When I was in the Army almost 100% of our (high) rate of unserviceable M16s was caused by failures of the BCG. The piston system solves that. No one who has ever been in charge of M16 maintenance would say that the Direct Impingement system is not a problem. It is.
OK. I'm not in the military myself, but let me ask you: how often you guys shoot in full-auto or tri-burst?
I wonder if that is an issue with the DI system putting strain on the BCG.


Cleaning a piston rifle is just so freakin' easy! The bolt carrier group is pristine; the difference truly is night and day.
+1.
:iagree:

rogervzv
06-06-2012, 8:09 AM
OK. I'm not in the military myself, but let me ask you: how often you guys shoot in full-auto or tri-burst?
I wonder if that is an issue with the DI system putting strain on the BCG.


+1.
:iagree:

Great question. I was stationed in Germany 1975-1979. The answer is that we almost never shot full auto. None of our rifles had ever been used in combat. I personally never shot full auto one single time after Officer Basic. Fact is that the DI system does great violence to the BCGs. The firing pins, the carrier group housing, all of it. We poor SOBs at the unit level just cringed when the inspectors came around because no matter what we did we could not keep those BCGs up to standard. Everyone knew that the M16s were maintenance dogs. That is the consequence of a Direct Impingement action that places all of the strain and all of the gunk right on the BCG which is the critical operating component of the rifle.

The DI system is a little lighter than a piston system. Life is full of trade-offs. But you cannot ignore the inherent design compromise in the DI system in that it creates a huge maintenance issue with the rifle.

My own belief is that for hobbyists such as 99.99% of the people on this forum (myself included), either design is OK. None of us are going to be humping our rifles through the boonies for days at a time. So I question how big a deal the weight issue is. On the other hand, most of us lovingly maintain our rifles, so as long as you don't mind putting in the time cleaning (and occasionally replacing parts in) the bolt carrier group, maybe the DI system is OK. Life is full of trade-offs. I just love the piston system of the Ruger SR556 because it makes maintaining the rifle a piece of cake. The BCG is clean and cool, and the piston and gas assembly is very easy and quick to clean after a day at the range. I also think that the piston system yields a smoother and kinder recoil. But a DI gun can be a hoot to shoot too.

BMWguy206
06-06-2012, 8:28 AM
I have a 14.5in mid-length GPU from Ferfrans/Adams Arms. It's basically identical to their mid-length elite line but with a heavier barrel.

So far it's been through 3 carbine/rifle courses and has about 1,600 rounds down the pipe. I don't do any bench shooting or plinkering. I only use this gun for training and self-defense if needed.

http://i154.photobucket.com/albums/s274/jcaldito206/TASC%20CAT%20303/fe179e59-1.jpg

raceraxe
06-06-2012, 10:22 AM
What about s&w m&p15 ps? Any one have these? Heard good things about them.

jkonquer
06-06-2012, 10:59 AM
New m&p uses adams arms design, so it should be very reliable.
Personally i would get adams arms conversion kit. There is nothing special about their upper other than the piston kit whih is same as conversion kit.

The way the look of it, lwrc, hk, and adams arms uses same or similar design.

theneko
06-06-2012, 12:24 PM
Check out Primary Weapon Systems. They have a neat design that is very light. And if it's good enough for Paul Howe...

bighead
06-06-2012, 4:27 PM
http://www.sigsauer.com/CatalogProductDetails/sig516-patrol-fde.aspx

bomb_on_bus
06-06-2012, 8:33 PM
I went with POF for both the 5.56 and .308 platform. Check them out as they pretty much set the bar for all other piston outfits.

The barrel that comes with POF rifles are top notch and everything that went into the rifle is designed with durability, reliability in mind.

And FYI the guys over at GAP use the lower/upper/rail from POF on their .308 GAP 10 and have made one hell of a tack driver out of the GAP/POF marriage.

The new prices are a little on the high side but check out gunbroker for a new model that is old stock so you can save a few hundred.

rogtac
06-06-2012, 9:06 PM
M6A3. I prefer the midlength over carbine piston.

Unfortunately, M6A3's are no longer made...being replaced by M6A5. Another good one, but may no longer be made (not positive), is the M6A2-S(tretch)....basically an M6A2 with midlength system...non-adjustable for those that don't want the extra cost of the adjustable gas block on the A3.


LWRC is not cheap...that is for sure...prepare to sell all your budget ARs and you might be able to buy an LWRC upper.

The Virus
06-07-2012, 10:14 AM
Have a FERFRANS S.O.A.R. it's great. Also have AA Evo, have zero problems with either.
Had an LMT MRP to bulky, sold it.