...Samsamnev said:Any one have any thoughts or shooting experience with the SR 556?
This is no problem ! All ARs do it. They soon settle in, even the op rod ones. No Problem = Ever !Muad'dib said:Google the following different combinations and look for blogs/forums and also do an image search: "Ruger SR-556" or "gas piston AR" plus add on to either phrase "bolt tilt." Apparently when an AR bolt carrier is struck with a piston its yaws slightly making it hit the insides of the buffer tube as it recoils and then scrape the hell out of it. I do not know long-term how this will affect the service or the accuracy of the rifle but it does not look good. This goes back to what others posted about capturing the bolt carrier via rails or other such means. I even read on some blogs of some bolt carriers with cam rollers in the works to stop this problem.
.samnev said:Got to shoot my friends SR 556. With all the goodies attached it seems to me to be about the same weight as the original SIG 556' But to me my SIG 556 with CTR stock and 551 handguards is handier and lighter.
The Ruger seem a bit more accurate than my 556 especially with lighter projos.
.ullie said:...Samsamnev said:Any one have any thoughts or shooting experience with the SR 556?
...the Ruger SR 556 is just another of the many versions of a DI AR converted to a piston drive operating system....the Ruger SR 556 is very similar to the the other DI converted piston guns...such as the LWRC and LMT...the piston rod or gas piston / tappet combination...drives the weapon by striking a bumper located on top of the carrier...this force is considerably "off axis" relative to the reciever's raceway's axis...not good engineering when the carrier is not captured by a railed raceway...as...for example is the SIG 55x and FNC...the Ruger uses the same AR multi lugged bolt...including the "in face" ejector...in fact...Ruger doesn't seem to have redesigned the bolt at all...look at the bolt shaft...familiar ?...they do...however...seem to have included an O ring to enhance the extractors grip...anyways...
...i would pass !
...Ruger SR 556 BCG with a slightly modified AR carrier...aside from the piston drive...it's pretty much an AR...using the same recoil spring and buffer system and such...it even has the same foward assist !
...some thoughts and pics of the HK 416 and comments on the DI AR conversions...
tombirdman said:[Whether gas inpingement or piston drive the power hits the same point on the bolt. You can see that on this picture.
The Ruger SR556 is no trying to be anything but a tricked out AR.
They say so.
Go to the Ruger sight and look at their movies.
They answere just about any question that might be asked.
I believe thir explanations and their sales points.
I have one and like it, second only to my SCAR.