quote:

Originally posted by gkgeiger:

quote:

Originally posted by g8rbreath:
Same thing here, rejected today because I had Model as "MPX-P-9" which I chose from the drop down menu using eForms. A note on my disapproved form from the examiner said to change it to "Sig MPX" which looked like it was the only MPX option on eForms (they must have gotten rid of all the other variants). I submitted the new corrected Form 1 within 15 minutes and emailed the ATF Examiner to let her know. My new form was approved within half an hour. Stoked!

I read about this on another forum. It concerned me since I have a form1 in process with the model MPX-P-9. I called the ATF and the lady I talked to said that with SN it is correct. I'm probably going to be denied.

quote:

Originally posted by dwd1985:

quote:

Originally posted by gkgeiger:

quote:

Originally posted by gkgeiger:

quote:

Originally posted by g8rbreath:
Same thing here, rejected today because I had Model as "MPX-P-9" which I chose from the drop down menu using eForms. A note on my disapproved form from the examiner said to change it to "Sig MPX" which looked like it was the only MPX option on eForms (they must have gotten rid of all the other variants). I submitted the new corrected Form 1 within 15 minutes and emailed the ATF Examiner to let her know. My new form was approved within half an hour. Stoked!

I read about this on another forum. It concerned me since I have a form1 in process with the model MPX-P-9. I called the ATF and the lady I talked to said that with SN it is correct. I'm probably going to be denied.

Guess what, Denied.

Easy fix: Call your examiner, explain the situation, provide the old and new document numbers...you will have approval within a day or two.

quote:

Originally posted by Brett B:
Trying to get caught back up on the MPX stuff. I remember reading a while back that people were getting a lot of gas in the face when shooting suppressed. Has this been resolved? What cans are recommended to minimize this?

I'm looking at the MPX Pistol 9" and am thinking about getting an Octane for it. I am also considering a Hybrid and am wondering if it would cause less gas in face since it's a larger volume and bore.

Lastly, how quiet is the MPX with subsonic rounds? Is it quieter than a 300 Blackout with subs? I'm looking for a quiet backyard plinker that doesn't bother the neighbors. I know it wouldn't be subsonic .22 quiet but I'm hoping it's a lot better than my Sig P220 with an Osprey 45.

quote:

Originally posted by Brett B:
Trying to get caught back up on the MPX stuff. I remember reading a while back that people were getting a lot of gas in the face when shooting suppressed. Has this been resolved? What cans are recommended to minimize this?

I'm looking at the MPX Pistol 9" and am thinking about getting an Octane for it. I am also considering a Hybrid and am wondering if it would cause less gas in face since it's a larger volume and bore.

Lastly, how quiet is the MPX with subsonic rounds? Is it quieter than a 300 Blackout with subs? I'm looking for a quiet backyard plinker that doesn't bother the neighbors. I know it wouldn't be subsonic .22 quiet but I'm hoping it's a lot better than my Sig P220 with an Osprey 45.

quote:

Originally posted by HRK:
Took the MPX to the range for the fist time with the collapsible stock, 150 rounds worked great but now the button to collapse the stock won't go down and it's stuck in the extended position

Anyone else experiencing this? If so what's the fix or is it call sig time.

quote:

Originally posted by D4Heavy:
Has anyone tried a Liberty Mystic suppressor on the MPX?

quote:

Originally posted by LDD:

quote:

Originally posted by HRK:
Took the MPX to the range for the fist time with the collapsible stock, 150 rounds worked great but now the button to collapse the stock won't go down and it's stuck in the extended position

Anyone else experiencing this? If so what's the fix or is it call sig time.

The A3 style stock is retained by two set screws that can be accessed from the underside of the stock body.

Turn the stock upside down and you'll see a small screw you can extract with an allen key (We'll call this one Screw #2). Underneath that screw is an identical screw (Screw #1). It's Screw #1 that controls the "tightness" of the struts (I think it may actually control how much the top release button can depress--if it can't depress far enough then it won't release). Back #1 off until the stock slides as you'd like it to, then re-install #2 to lock #1 in place.

Self diagnostic: If #1 is too tight, then the struts lock and you can't open or collapse the stock tail. If #1 is too loose, you get excessive play between the locking piece and the struts (and the stock feels wobbly).

I guess you could use loctite on #1, but be conservative and use blue loctite, not the red or purple stuff.

quote:

Originally posted by D4Heavy:
Has anyone tried a Liberty Mystic suppressor on the MPX?

quote:

Originally posted by slipjett:

quote:

Originally posted by D4Heavy:
Has anyone tried a Liberty Mystic suppressor on the MPX?

I have the titanium version of the Mystic, the Infiniti. Use it almost exclusively on my MPX, sounds great, but protrudes way out even with my cut 4.5" barrel.

quote:

Originally posted by D4Heavy:

quote:

Originally posted by slipjett:

quote:

Originally posted by D4Heavy:
Has anyone tried a Liberty Mystic suppressor on the MPX?

I have the titanium version of the Mystic, the Infiniti. Use it almost exclusively on my MPX, sounds great, but protrudes way out even with my cut 4.5" barrel.

I guess there is always a trade off between sound suppression and length. If you want it short and compact it's going to be louder.

quote:

Originally posted by slipjett:

The trade off does have me seriously thinking of a SilencerCo Omega 9K...