- Advanced ergonomic shape improves the feel and handling of your MPX
- Easy no gunsmith installation
- Width 2.06 inches/ OAL height 2.6 inches/Internal Diameter 1.8 inches
- Lightweight rugged construction of 6061 aluminum, hard coat anodized for a lifetime of service
- Heat treated 4140 retaining clip with phosphate finish
- Includes one five slot M-Lok compatible rail section
- Patent pending
- 100% Made in the U.S.A., MI Lifetime Warranty
Installed Weight
- 4.5" - 3.0oz
- 6.5" - 5.0oz
- 8.0" - 6.6oz
- 10.5" - 8.8oz
- 14.0" - 12.1oz
16 Reviews Hide Reviews Show Reviews
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5 Midwest Industries MPX 4.5in Handguard
Posted by Dave F. on Jan 22nd 2021
This is actually my second Midwest Industries MPX Handguard. I bought the 8in version while still awaiting delivery of my new MPX-K. I liked the 8in Handguard so much that when I finally received my gun, I immediately ordered the 4.5in Handguard to replace my stock one. It looks and feels so much nicer than the standard Sig 4.5in Handguard. The Handguard retainer seems much stronger than stock, which should keep it from loosening up and rattling. Plus I have more and better options for mounting M-LOk accessories like my Surefire Mini Scout Weapons Light. Well done MidWest Industries!
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5 Very happy!
Posted by David H on Jul 30th 2020
I picked the 8" handguard to go on my MPX to use with the 4.5" barrel with a suppressor or the 8" barrel with or without suppressor. Works great with either barrel choice. Fit is solid. Highly recommended!
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5 MI MPX 10.5" Handguard M-LOK
Posted by Andrew Narayan on Jul 30th 2020
I bought this specifically to cover up my Hybrid 46 suppressor and have more grip for leverage an control. Plus its looks cool! For anyone with the SilencerCo Hybrid 46 the ASR mount gets caught up on the retaining clip. You have to release those two pins and remove the retaining clip in order to slide fully into place. Its no biggy, just a couple more steps for removing the suppressor. Other than that I can't complain! Great finish, easy install and good video tutorial on MI site on install directly under product! Made in the USA!!! This would be my 3rd hand guard purchase and MI will continue to be my 1st choice for after market hand guards.
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5 MPX 8.0 Handguard
Posted by Baaa Sheeple on Apr 24th 2020
Phenomenal fit and look. Nearly limitless M-LOK options compared to the frustrating Sig handguard. Despite almost universal good reviews of the Sig MPX, I find it a bit wonky in several ways, not the least of which is the handguard. MWI is always a problem-solver. Can't live without them for AK optics mounts. I can go on and on but you get it. Always friendly folks when I have to call. Prompt email responses too. AND they send a little bonus item with each order that so has been useful (not stupid junk) and appreciated and you realize they go the extra mile. Can't beat them. There's Chinese crap out there for a fraction of MWI price...well, go for it if you want COVID-encrusted poorly engineered shoddily constructed parts. For my rigs, I'll stick with my Midwest friends!
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5 Excellent quality!
Posted by JP on Apr 24th 2020
The MPX 8.0" Handguard fits perfectly and the anodize color match is great! Now just waiting for the 10.5" handguard to come off backorder. Great job to the machine shop team!
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5 Amazing fit up
Posted by Zachary Highfill on Apr 24th 2020
I always buy my handguards from Midwest Industries and I am never disappointed. This handguard fits extremely well, there is absolutely ZERO wobble like with the OEM Sig handguards. It looks like it belongs and feels great. A little more difficult to push the front take down pin in but totally worth it. 10/10
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4 Handguard
Posted by Unknown on Jul 25th 2019
Great fit and quality. I just wish they offered it in a 6" instead of 6.5" My muzzle sits just inside of it.
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5 MPX 6.5 handguard
Posted by Stephen on Jun 12th 2019
Like every other Midwest Industries product this is a great addition. Excellent finish and fit, remove one pin slide off the old rail and put on the new one. Doesn’t get much easier than that. . Just buy this already for your MPX you will thank yourself.
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5 Perfect for my MPX TacOps
Posted by Greg Palmer on May 31st 2019
The hand guard slid right on with no fitting needed. Front sight attached with no problems as did my angled fore grip. The M-lok attachments are more common than trying to find keymod ones these days too.
