- Constructed from 4140 steel
- 1.810" long to cover the taper pin holes if FSB is removed
- Low profile design will fit under most commercially available hand guards
- Secures to the barrel with three set screws
Weight: 2.4 oz
Inside Diameter: .625"
Length: 1.810"
Height: 1.290"
Width: .755"
Distance between screw holes: .600"
11 Reviews Hide Reviews Show Reviews
-
5 My go to gas block
Posted by Rick on Oct 26th 2023
I have been building ARs since the 1980s with several different gas blocks. When I have tried every trick I know to get another brand to work I will usually come back to my actual favorite...three screws Midwest Industries steel. Mainly because it just plain works , it's tough and it's never let me down.
-
5 Gas block
Posted by Nathaniel Thill on Dec 8th 2022
Great product
-
5 Gas Block
Posted by Andrew Steirman on Oct 7th 2022
Outstanding fit and finish. Fit like a glove on my Rock River HBar. Easy assembly. Could not be happier, would buy again and highly recommend !
-
5 Solid As They Get
Posted by RGCGFMT on Feb 8th 2021
Converted an old 20" Bushmaster National Match barrel with a pinned FSB for use with a 15-inch MI G3 M-LOK handguard. Works great. Barrel and gas tube fit is perfect, machining looks great, finish is uniform, three set screw attachment is solid. Not a single damn thing to complain about. Thanks for doing what you do, MI. Appreciate ya'll.
-
5 .625 gas block
Posted by John M. on Jul 30th 2020
Perfect pairing with the 18" lightweight barrel I had purchased. Very snug fit and no indication of any gas leak found after range session. Gunsmith friend advised me that this is his favorite gas block when he builds AR's for customers.
-
5 Very nice
Posted by Shane on Feb 4th 2020
I really like this gas block, it's stout without being too large. It fits the MI rails without issue which incidentally, is the rail I prefer.
-
5 Excellent.
Posted by Tim M. on Jan 30th 2019
The installation was easy it came with clear instructions and the quality is top notch. It was very nice tolerances. I think you can't get better for your buck.
-
4 Nice gas block
Posted by CK on Nov 9th 2018
Could be a touch smaller but still fits just right under rail and the Midwest gas tube and barrel all fit together perfectly.
-
5 You can't go wrong here
Posted by David on Aug 1st 2018
Nice gas block. The 3 set screws will grip the barrel HARD - no chance of it coming unaligned. My only gripe is that its set screw hole centers are not the standard .50, .46, .45 because of there being 3 instead of the typical 2.
