Feb 4, 2025 · Hello, New here and new to Sig in general—just bought my first one, the MCX Rattler SBR in 5.56. It’s also my first SBR. The barrel doesn’t come threaded and I didn’t see any replacement threaded barrels on the website. Is it even possible to put a suppressor on this? Thanks in advance.

Jan 6, 2025 · Hello again all, its been a while since I was last on but from my searching, it doesn’t seem like much has been discussed on use of MCX’s and FRT’s (Forced Reset Triggers). I was looking to see if a 3-position variant is compatible and …

Nov 28, 2017 · IMO, legacy MCX is a great deal right now, because SIG is moving on to this new version. It's like getting a screaming deal or last year's model when GM, Ford or Ram's new pickup has a new motor &/or other new tricks.

Jan 1, 2023 · A forum community dedicated to SIG Sauer Pistols and SIG Sauer Rifles owners and enthusiasts. Come join the discussion about optics, hunting, gunsmithing, styles, reviews, accessories, classifieds, and more!

Dec 31, 2015 · No, we're on SIG's pre-order wait list for a MCX 300blk caliber conversion kit for the MCX 556/223 16" rifle we got last December. Looks like they have our rifle in stock here: SIG SAUER MCX 5.56mm Patrol 16 Barrel Thin Folding Stock 30 Rd Mag - Impact Guns

Sep 15, 2021 · I was trying to see how a full auto function works on the MCX, it is plug and play with standard AR 15 lowers with an adapter, but I just want to know how they designed the military ones to work, or if the used a shortcut similar to the SU-15 or PMM sear bar and used a sear similar to the M16, used a sear on the front of the hammer like an AK, or how much is …

Oct 25, 2016 · Hi All, I am new to the SIG MCX and to AR15-type guns in general. I want to acquire some magazines beyond what came with my 5.56 MCX. Are any AR15-type magazines generally compatible with MCX guns, or must I stick to the SIG brand of magazines? If I can use other brands, what is a good...

Jan 26, 2023 · So im building a sig mcx hybrid with an AR lower, And was wondering how to lubricate the upper. I come from using ar15s. Do you apply lubricant on the piston? If so where? Where do you libricate the BCG? All help and pictures wanted.

Dec 18, 2015 · SIG MCX Gets a Light After 4 attempts, MCX white light install's done. Trying to keep the light as close-in to the rifle as possible - MCX's fore end rail's shape & assembly makes for a little different light mounting position.

Dec 31, 2018 · Couple years ago with my 1st MCX, I called SIG customer service with basically the same question. I pointed out their confusing MCX manual's gas valve instructions. The CS guy agreed, saying the manual tech writers frequently wrote these instructions either before the weapon was actually produced, or with limited to no actual handling of the gun.