SIGSIG556xi Modular Rifle is multi-calibers (5.56mm NATO, 7.62x39mm and 300BLK) only semi-automatic gas piston / op-rod (type control rod drive) combat / tactical rifle / carbine / SBR (short-barreled Shotgun) configuration in the Russian 7.62x39mm (with butt removed), which essentially turns the weapons into the 21st century modern Kalashnikov AK-47 / AKM using AK-magazine which we really liked.
One that we handled and photographed the trees polymer 30-round mag AK aTAPCO Intrafuse (black), but all will MILSPEC 7.62x39mm AK mag out there, including US mag PALM AK30 AK Mag 30rd. The same thing applies for magazines 5.56 in configurations 5.56mm and 300BLK. In our opinion, the ability SIGSIG556xi's 7.62x39mm AK-config, in the multi-frame appearance calibers weapons is the main selling point, because we were not sold on the idea of Quick-change barrel system is superior parts or even the same, with the receiver on hot modularity AR-15 / AR-10.
With platform AR-15 / AR-10, you can pre-zero your optics to the receiver, certain long-barreled higher and calibers, so when you trade above (and magazines) -which took all of about 30 seconds or less: You are ready to go and fight or shoot straight. Of course, various on / optical reception combo is more expensive, but also more practical in the real world, if you use the weapon on the beach or in combat. This (AR-15 platform) more quickly and completely modular.
BRC (Quick Change Barrel) system which is cool and all, but, in general, we still prefer the higher Swap AR system for small arms 5.56mm calibers 7.62x51mm.
SIGSIG556xi multi-calibers tactical / battle rifle / SBR, weapons look and feel Russian 7.62mm Kalashnikov AKM types of configurations, and suggestions from our option is to configure the MIL-STD-1913 "Picatinny" rail / forend rail tube system for trains The top cover of the receiver / receiver on.
SIGSIG556xi ambidextrous controls, left / right handle the heat load, capacity folding stock, and beautiful appearance of open flash Hider pin. We just hope that it is without the ping / without rings.
We prefer the AR-15 platform in the life of two-gas-impact (DGI) gas piston / op-rod (push-type operating rod) design for the 5.56 NATO (5.56x45mm NATO) 300 AAC Blackout (300BLK) template, which we can only exchange the real costs and magazines quickly, we would not mind having SIG556xi GIS in our collection, as well, especially since we can configure it as the AK with the assumption that the pistol was runner. It was just a beautiful modular weapon. Our recommendation is only in SIG Sauer will develop the capacity of 5.45x39mm calibers conversion because it is a large size accurate at longer ranges, easier to get, and cheaper than the 7.62x39mm ammunition. A choice of modular 5.45mm Russia (and perhaps also the conversion kit and the CPS 6.8) will really complete the package, in our opinion. It seems logical that the select-fire version SIGSIG556xi will be offered to end users MIL / LE, but we forgot to ask about it, so we're not sure yet.
The following information about the SIG Sauer SIGSIG556xi come directly from the company Web site and have edited a little:
"Introducing SIGSIG556xi, rewrite standards for scalability, reliability and performance of modern weapons platform. Based on the legendary SG 550, SIGSIG556xi will change the way the military, law enforcement, responsible citizens and to adapt the display rifle. Utilizing time -Tested bolt rotation and piston operating system gas adjustable, allowing the operator SIGSIG556xi choice of gauge, barrel length, configuration handguard / shares and the lower receiver.
A detachable barrel allows the operator to choose the length needed for a specific mission. Add the appropriate bolts, SIGSIG556xi can be changed to one of three sizes, 5.56x45mm NATO, 300 Blackout, and 7.62x39mm NATO. Users can also quickly change the bottom of the recipient non-serial, which allows the use of either STANAG AR magazine style or rock-and-lock-style AK magazines. Upper receiver is SIGSIG556xi part series, making it easy to buy low section.
Handguards accept all polymers and light rail Magpul® kit, while aluminum and carbon fiber hand guards received 2 ", 4" and 6 "M1913 rails. Barrels are available in 10", 14.5 "and 16". Truly ambidextrous, which has a safety switch SIGSIG556xi ambition, news magazines and user swappable handle (right or left) load. Optionally receiving end plate allows the use of both AR buttstocks extension tube and a compatible receiver or M1913 shares.
Thanks to trigger a redesigned package, the military version of the application of the law SIGSIG556xi capable of fully automatic fire in all calibres, including 7.62x39mm. Russia's lower has been carefully tested in accordance with AK magazines are available, including the United States PALM "
