Jan 28, 2025 · My first addition to my new MPX (other than a few magazines) is a brace. I am torn between the MPX PSB from SB Tactical and the Sig-branded folding brace. So far, my reading says the folder is lighter and more compact, but I guess …

Aug 6, 2017 · Long story short: It's less expensive and less risky to buy an MPX carbine that comes with factory support and warranty. If BAFTE were to bring charges, the legal defense costs would exceed the carbine's cost in a few of hours of defense time. Bill

Oct 9, 2017 · Proud owner of MPX PSB here... Love the firearm, but the big clunky folding brace not so much. I noticed a "K" model is out now with what looks like a sliding brace. Anyone out there familiar with this or have one ? I am particularly interested in the difference in length of pull,if any, between the folder and the slider when fully extended.

May 21, 2021 · Will the SB Tactical MPX PSB for the MPX & MCX work on an MCX Upper mated to an AR15 Lower? I remember seeing a comment somewhere about the factory collapsible brace not quite fitting such a setup, but I wonder if the SB Tactical one will work. SB Tactical MPX PSB Here is a picture I found with a full MCX Rattler and this Brace:

Nov 19, 2021 · Just got a MPX pistol and need to get a brace for it. I really like collapsible braces like the SB Tactical PSB more than the folding but hear that they are not that comfortable to shoot with. Is this true, and if so, what are the more comfortable braces to shoot with.

Feb 25, 2016 · I went to the range yesterday and was able to successfully put another 200 rounds through the MPX without any failure to battery and/or failure to eject. They were all 115gr Sig Sauer ball ammo. I then loaded up a mag of Federal HST's to give that another go. AGAIN FTF on about 50% of the rounds. Took it home to give it a good cleaning.

Aug 30, 2017 · MPX PSB to Carbine Question Sig sells various length barrels and hand guards for the MPX. If you have an MPX PSB 8 inch, the change barrels to the 16 inch version and change the hand guard making it a carbine, is that legal?

Jan 19, 2017 · The Sig website a couple weeks ago (like 2) had the MPX Pistol (Gen2) with an MSRP of $1500, that has since jumped to $1852. The same goes for the MPX-PSB, etc, etc. My local Cabala's had the Gen 2 PSB listed on the shelf/website just a few weeks ago for $1650, now its $1899. Many online dealers had the MPX Pistol (Gen2) for around $1200, not now.

Feb 20, 2016 · I am a long time lurker. I recently acquired a Gen 2 MPX pistol with the PSB and a MCX pistol with 2 barrels (9" 5.56 and 300BO) with the PSB. I am waiting on Form 1s to come back for both pistols. I would like for this thread to avoid the debate about shouldering a …

Oct 11, 2016 · The MPX with the standard SBX brace is too short, you'll need to pin/weld something on the muzzle to give you the length. The way I measured mine, is from the end of the tube (not the end of the brace) to the end of the muzzle (since I pin/welded a Griffin 3lug mount on mine). IIRC, I came out to 26.75" OAL.