KeyMod handguards are designed with different inner diameters so that they can fit over barrels or sound suppressors as needed. Sig Sauer has always been unique in their approaches to design and the entire Sig Sauer ASP program of air pistols and rifles has kept non-functioning parts cosmetic. The HK MCX and MPX are much further along in just their first couple of years than the AR platform was after a decade.
Download owners manuals for your SIG SAUER pistols and rifles. Sig Sauer MCX Part 3 . I’m still undecided though about whether to buy an MCX or MPX. A very impressive replica. A bit much for a CO2 version to adopt, so the airguns are standard configurations of the two Sig models, the MPX and suppressed MCX (once again a visual not a functional feature on the CO2 model). I am not a fan of the 88/90 vi2 cartridges Expendive and other always available locally . I know it doesn’t suppress the sound, but is there any data showing that it increases shot fps or improves shot accuracy? Questions and concerns? Download the manual for your SIG SAUER product. The flip up front and rear BUIS are fully adjustable and more than adequate for the range of the CO2 model, however, it is optics that really make this new Sig Sauer 88 gram CO2 model perform. All of this is nice to know but little translates to the air rifle as all of the controls, except for the ambidextrous safety, charging handle, and right side magazine release are functional, the rest are meticulously molded into the receiver and magazine well to look 100 percent real, but not function. The pellet magazines look like short (10-round) AR mags. English . and charging handle. The ambidextrous safety is the only operating control on this side of the airgun. No thanks .Would like to see a dual 12 gm co2 adapter .This rifle would be better with fully functional not pressed in pseudo controls . The MPX and MCX were designed to be the most modern and adaptable (modular) military rifles available; light in weight at around 6 pounds (the CO2 version comes in at 6 pounds, 10.5 ounces with the suppressor shrouded 21-inch barrel), and has the same lean profile for ease of balance and quick handling in close quarters. As for the P226 faux suppressor that will be coming up later this month, but you do raise an interesting point about velocity which we will address!