SgtRaven 531 Posted December 8, 2014 Report Share Posted December 8, 2014 (edited) Hey guys, Had SIG556 itch for a while, but got cautious after hearing about the issues with early batches (2009-2010?). SIG556xi got me sold on "Gen2" improvements, mainly: interchangeable caliber barrels (awaiting .300 Blackout kit release) and charging handle (I run mine on the left), longer flat top rail, folding iron sights, ambi mag release and safety. Frankly, I elected for the "Standard" package, since it had everything I wanted, and I like the feel and look of the polymer handguard (I added Picatinny for USGI Grip Pod). Gabe Suarez called SIG556 a "Cadillac of AK-s". I see where he's coming from, but wouldn't put it that way. However, I can also see where Kalashnikov could easily capitalize upon, but instead let SIG cash on the concept. For starters, "lower-upper" and rigid receiver (with ambi controls on "xi") AR's concept and long sight radius, combined with AK-like gas piston based operation are absolute win-win. Switchable charging handle links the carrier and gas piston: brilliant! 3 position gas port: never got to that point, but "never say never". Nice, rock-solid folder (with AKS-influenced lock, but much smoother fold release button). Added snap-on cheek weld raiser. Overall, it's a rock solid platform with great ergonomics. Shooting. I haven't run it through the vigorous bench testing (not my forte or interest). My SIG groups are tighter than with any of my AKs (5.45 and .223/5.56). At just over 450 rounds through, there was only one malfunction, and it's worth elaboration about. "Tula" casing swelled in and failed to extract after firing, ending up being hard-knocked out with use of the cleaning rod. Happened around 80 rounds count, after moderate rate of semi- fire. Steel casing looked abnormally deformed on one side, starting with neck. Too bad, I didn't take a picture, but few expert loaders pointed out the likely cause (defective casing). Frankly, 1st ever failed Russian ammo... Last week took it to the local Action Rifle Match, equipped with Aimpoint CompM2. It ran flawlessly and was more accurate than the Operator:) In two days I'm going back to continue working on my Winchester/NRA Distinguished Expert ("High Power Rifle" category). Posting the picture from the first, opening round: 50 yards "benched" and same while free-standing (no resting against anything or use of sling allowed). One thing I'm not so happy about is a typical "military-grade" trigger. It's long and heavy, but solid all the way through. Unlike with AR (and even AK/Saiga) there are only two improvement options are currently available: 1) Spring kit (lowering the pull from 8+ lbs down to ~4 lbs or slightly lower); 2) Hammer/sear replacement Match-grade kit with crisp and well defined 2nd stage. Currently, spring loaded "plunger" is set to provide 2nd stage-like feedback to the shooter, and it's adjustable for the pull distance prior to hammer release. I've got a spring kit, but so far stopped at "plunger" adjustment only and quite like it for the Action Match environments. Might take it further and swap the springs before making the decision on upgrading the hammer and sear. I replaced factory three-prong flash hider (more effective than the standard "bird cage") with Manticore comp, but despite its claims I noticed the "fireballs", even though swap resulted in much improved muzzle control and .22lr-like recoil. I might try it with my ever-trusting Miculek comp next. Overall, I'm a "happy camper", placing this boomstick into my definite "go to" rifle category. Happy Shooting! Edited December 10, 2014 by Sgt. Raven Quote Link to post Share on other sites
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