I had similar results with a PSA px- 9 and a Griffin Optimus with 3lug adapter. My point of impact shift was 21 inches low and 9 inches right . I gave up on 3 lug and went to taper mount. I used the same 3 lug adapter on a CMMG 22lr with a Griffin 22m and had zero point of impact shift for all three lugs. Weird just weird
Off camera, POI shifted, but there was no increase/decrease of accuracy. Agreed, all my 3-lug cans slightly shift depending on orientation. I try to keep it consistent and make a mental note to keep the can's logo as close to 12-o'clock as possible.
i've watched a number of mpx videos in the last day or so and a common theme is how it shoots all over the place. has anyone figured out why and have they fixed the problem??
Not sure what other videos you watched, but the MPX is plenty accurate out of the box. The problems usually come up when people switch the muzzle device like this guy did. The muzzle device needs to index off of Sig’s proprietary 25 degree taper or you need to get an adapter. Otherwise, groupings tend to open up. If you want a trilug like this guy, your best best is getting it from ILWT, which offers one for the MPX specifically.
The most consistent solution I’ve had is increased power recoil springs and reduced diameter gas plugs. Barrel torque variation does nothing for it. I think that the gun is under sprung and is just beating itself up. Putting a suppressor on increases the back pressure and the bolt speed which seems to make it worse especially on the 4 inch guns. Could explain why they beat up and break triggers so much too. They seem to also be very picky on ammo selection as well. 147 grain seems to work the best. Using a direct thread Sig ModX9 was atrocious until I upped the recoil spring power and reduced the gas plug size. It was shooting around seven inches before and about two inches after.
@danmosse9170 no. The accuracy issues is from a 3 lug adapter. I had the same thing. Switched to a plan b cherry bomb , and hub adapter to plan b for my can. Now it's literally 1 moa. Tac driver. As for gas issues. U can get an adjustable gas plug from ilwt
I was starting to think this was a commercial for a Rugged Obsidian suppressor, lol. What optics are you running on those? The one on the MP5 looks like an Elcan or Aimpoint/MRO patrol. I recently purchased the MPX-K and submitted paper work for suppressor. I haven't shot it yet and hoping I didn't waste my money.
Well, my Obsidian is the quietest 9mm can I own. The MP5 has an Aimpoint PRO with the standard low mount, I really like the optic. I think you'll be happy with the MPX. They do shoot nice, but they can be a bit gassy. The accuracy seems to be "okay" for an up close kinda gun. Just make sure you understand any POI shifts with a suppressor.
May need to tighten the screws on the barrel of the mpx, for whatever reason, it's a well known and documented issue that somehow still comes from the factory out of spec, but once tightened, accuracy improves tremendously.
A friend of mine has the same setup that you do, a PTR and a B&T can that has the EXACT same point of shift you experienced. When he asked me my opinion, I originally thought that it was likely the weight of the can or some sort of misalignment with a tri-lug. But after seeing this video, I now think it's more than likely a design issue. I'd be curious to see if other MP5 clones are also replicating the same point of shift as the PTRs with B&T cans.
Yeah, I gave up on three lug a while ago. B&T cans on SP5, but results weren't as bad as yours. Def suppressor-dependent as your Rugged did really well. Not a super accurate platform but man, these B&T cans are cheap for a reason.
I will add that on your B&T you did not confirm if it was your first shot that went low and left. Not sure if you are aware but 1st shot through a supressor is well known to be different. Usually in relation to amplitude making it louder than normal, often stated due to more oxygen in the can internals and something you dont hear of as often anymore running a can "wet or dry" has to do with the physical internal volume. That MAY be something to look at.
I have a Gen 4 PX9 suppressed or unsuppressed it shoots roughly a 1-in hole with All rounds out of an extended mag with pretty much any 147gr ammo I throw in it using an obsidian 45 suppressor 115s are looser but nothing like you're seeing either of those high-end guns
Mine is a "Gen 2" Pro model. But yes, I did swap the handguard for the new M-Lok style. As far as I know, there aren't any handguard alternatives for the Gen 1, as they mount a bit differently.
Dude good idea for a test but you should have set up a better rest and position since you are really testing your stability more than the cans. And yes I have done similar tests and also seen low and to the right shifts even with threaded .30 cal supressors on a bolt gun on a SOLID as a rock front and rear rests.
As am I, but I've heard others report poor accuracy with 3-lug adapters. I checked the barrel bolt torque after this trip, and they were well below 40in/lbs. I also re-torqued the 3-lug adapter as I was able to spin it off by hand. We'll see if there's an improvement.
I have two MPXs a 6 inch barrel and a 9 inch barrel. They shoot extremely accurate up to 200yrds when I got them I cleaned off any oil or factory threadlocker off of the barrel screws and applied vc3 thread mate and make sure they were properly torqued in sequence. If you tighten down one completely and then the other one down completely you can totally screw up your accuracy.
Sig barrels have a 25 degree taper. You need to get a muzzle device that accounts for the taper or get a taper adapter. ILWT offers a trilug muzzle device specifically for the MPX that performs reliably.
Like many others, I’ve had nothing but trouble with the four inch MPX variant and a direct thread Sig can. The eight inch (and longer) guns seem to be less trouble. With some tinkering with the spring weights and gas plugs and being flexible with trying different bullet loads it can be mostly overcome. However, I find myself just shooting an MP5 more instead of dealing with the headache.
@@t.wood01i ordered the B&t can but in the compact version I’ll put it on my apc9 pro and put the omega 9k I also ordered on the full-size sp5. The B&t can is said to be made to B&t and hk specs so there isn’t any play. He has a clone and if you noticed that tri lug has slop in it.
This may sound like over kill... but i presume the most accurate way is to be not resting the gun on the mag while shooting wind and elevation and even tilt... have a better rest for the gun and use a magnified optic.
I’ve never shot a gun off bags with the magazine as a resting point
😂 you’ve never heard of a bipod/magazine hybrid
@@trainwreck2k2 that would be a monopod....lol
Good way to cause a failure to feed
Magpod
B&T was like, "im tired."
😐🤣
I had similar results with a PSA px- 9 and a Griffin Optimus with 3lug adapter. My point of impact shift was 21 inches low and 9 inches right . I gave up on 3 lug and went to taper mount. I used the same 3 lug adapter on a CMMG 22lr with a Griffin 22m and had zero point of impact shift for all three lugs. Weird just weird
I recently purchased a Dissent and I was looking at buying a t9 can with a conversion adapter this video has me rethinking it
Another thing to consider too is trying the different positions on the 3-lugs. Try rotating each suppressor apparently it does make a difference too
Off camera, POI shifted, but there was no increase/decrease of accuracy. Agreed, all my 3-lug cans slightly shift depending on orientation. I try to keep it consistent and make a mental note to keep the can's logo as close to 12-o'clock as possible.
What we wanted to see was the poi shift with the 3 different mounting options on each can
Mounted my Obsidian with the Rearden taper mount
I ended up with a Rearden mount for the MPX. It's been great!
i've watched a number of mpx videos in the last day or so and a common theme is how it shoots all over the place. has anyone figured out why and have they fixed the problem??
I can only imagine it's improper torque on the barrel screws. I have two MPXs and they shoot extremely accurate up to 200 yrds
Not sure what other videos you watched, but the MPX is plenty accurate out of the box. The problems usually come up when people switch the muzzle device like this guy did. The muzzle device needs to index off of Sig’s proprietary 25 degree taper or you need to get an adapter. Otherwise, groupings tend to open up. If you want a trilug like this guy, your best best is getting it from ILWT, which offers one for the MPX specifically.
It's the 3 lug adapter. Mine was all over the place. Switched to a plan b mount and now it's beyond accurate. Like a rifle
The most consistent solution I’ve had is increased power recoil springs and reduced diameter gas plugs. Barrel torque variation does nothing for it. I think that the gun is under sprung and is just beating itself up. Putting a suppressor on increases the back pressure and the bolt speed which seems to make it worse especially on the 4 inch guns. Could explain why they beat up and break triggers so much too. They seem to also be very picky on ammo selection as well. 147 grain seems to work the best. Using a direct thread Sig ModX9 was atrocious until I upped the recoil spring power and reduced the gas plug size. It was shooting around seven inches before and about two inches after.
@danmosse9170 no. The accuracy issues is from a 3 lug adapter. I had the same thing. Switched to a plan b cherry bomb , and hub adapter to plan b for my can. Now it's literally 1 moa. Tac driver. As for gas issues. U can get an adjustable gas plug from ilwt
I was starting to think this was a commercial for a Rugged Obsidian suppressor, lol. What optics are you running on those? The one on the MP5 looks like an Elcan or Aimpoint/MRO patrol. I recently purchased the MPX-K and submitted paper work for suppressor. I haven't shot it yet and hoping I didn't waste my money.
Well, my Obsidian is the quietest 9mm can I own. The MP5 has an Aimpoint PRO with the standard low mount, I really like the optic. I think you'll be happy with the MPX. They do shoot nice, but they can be a bit gassy. The accuracy seems to be "okay" for an up close kinda gun. Just make sure you understand any POI shifts with a suppressor.
MPX gen 2, 8” will do better than the MP5. MPX-K is just expensive crap.
May need to tighten the screws on the barrel of the mpx, for whatever reason, it's a well known and documented issue that somehow still comes from the factory out of spec, but once tightened, accuracy improves tremendously.
Done that several times, to the factory Sig specs and torque specs others have recommended, with no improvement.
A friend of mine has the same setup that you do, a PTR and a B&T can that has the EXACT same point of shift you experienced. When he asked me my opinion, I originally thought that it was likely the weight of the can or some sort of misalignment with a tri-lug. But after seeing this video, I now think it's more than likely a design issue. I'd be curious to see if other MP5 clones are also replicating the same point of shift as the PTRs with B&T cans.
Very interesting, thanks for sharing! I guess we need to get the other MP5 variants out to the range soon.
I’m guessing that that B&t can is best mated for a apc9
@@quhectic221st You'd think so, until I saw my friend test it on an APC9 at his dealer. Same result.
@@liveverdienever I’m calling bs on that show proof before you make those claims
I was about to buy this B&T and conversion kit glad I saw this video and comments..I'm throwing that idea in the 🗑️
Yeah, I gave up on three lug a while ago. B&T cans on SP5, but results weren't as bad as yours. Def suppressor-dependent as your Rugged did really well. Not a super accurate platform but man, these B&T cans are cheap for a reason.
Do you have a H&K sp5 or is it a clone. As usual no response
Your 1st set of Supers in the B&T looked like key holing to me.
I will add that on your B&T you did not confirm if it was your first shot that went low and left. Not sure if you are aware but 1st shot through a supressor is well known to be different. Usually in relation to amplitude making it louder than normal, often stated due to more oxygen in the can internals and something you dont hear of as often anymore running a can "wet or dry" has to do with the physical internal volume. That MAY be something to look at.
I have a Gen 4 PX9 suppressed or unsuppressed it shoots roughly a 1-in hole with All rounds out of an extended mag with pretty much any 147gr ammo I throw in it using an obsidian 45 suppressor
115s are looser but nothing like you're seeing either of those high-end guns
Where can I purchase the paper target at? Who makes the paper target?
Free download from T.Rex Arms
Did you change the HG on your APC9 SD ? Because I thought yours was a Gen 1?
Mine is a "Gen 2" Pro model. But yes, I did swap the handguard for the new M-Lok style. As far as I know, there aren't any handguard alternatives for the Gen 1, as they mount a bit differently.
what if you are using a bixler style mount i think thundercans(curtis tactical) makes one
\
Which 147gr?
Federal FMJ
Dude good idea for a test but you should have set up a better rest and position since you are really testing your stability more than the cans. And yes I have done similar tests and also seen low and to the right shifts even with threaded .30 cal supressors on a bolt gun on a SOLID as a rock front and rear rests.
Did you have your Rex cerakoted? If so what color
No, it's just Rust-Oleum high-temp black paint. It's fine, but plan on respraying every couple years or so.,
I am shocked at how poorly the MPX did on accuracy
As am I, but I've heard others report poor accuracy with 3-lug adapters. I checked the barrel bolt torque after this trip, and they were well below 40in/lbs. I also re-torqued the 3-lug adapter as I was able to spin it off by hand. We'll see if there's an improvement.
I have two MPXs a 6 inch barrel and a 9 inch barrel. They shoot extremely accurate up to 200yrds when I got them I cleaned off any oil or factory threadlocker off of the barrel screws and applied vc3 thread mate and make sure they were properly torqued in sequence. If you tighten down one completely and then the other one down completely you can totally screw up your accuracy.
@@Dr.Shankensteini need to try this.
Sig barrels have a 25 degree taper. You need to get a muzzle device that accounts for the taper or get a taper adapter. ILWT offers a trilug muzzle device specifically for the MPX that performs reliably.
Like many others, I’ve had nothing but trouble with the four inch MPX variant and a direct thread Sig can. The eight inch (and longer) guns seem to be less trouble. With some tinkering with the spring weights and gas plugs and being flexible with trying different bullet loads it can be mostly overcome. However, I find myself just shooting an MP5 more instead of dealing with the headache.
awwwwwummmmmmmmm🤣
Do you have an affiliate link to that mat?
I don't, it's just the Midway USA branded mat that I got during one of their sales.
That’s weird I can’t believe that b&t can did that
I agree. I plan to try it on other MP5 hosts to see if the results are similar.
@@joesrcoolAny follow up? I'm thinking of running the MP5 with a B&T can but now I'm not so sure if I want to make that commitment.
@@t.wood01i ordered the B&t can but in the compact version I’ll put it on my apc9 pro and put the omega 9k I also ordered on the full-size sp5. The B&t can is said to be made to B&t and hk specs so there isn’t any play. He has a clone and if you noticed that tri lug has slop in it.
I bet you got a ILWT barrel! Most of his barrels are garbage and not accurate. Stick with a sig barrel and you will be fine.
This is a factory Sig barrel with an ILWT 3-lug adapter
My ILWT 6.5 barrel is a tac-driver
This may sound like over kill... but i presume the most accurate way is to be not resting the gun on the mag while shooting wind and elevation and even tilt... have a better rest for the gun and use a magnified optic.