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AR15.COM
6/22/2026 10:59:30 PM EDT
I like my m&p 2.0 compact a lot…except the darn hole that blows gas on my red dot. Seems like they would find a different method by which to indicate a loaded chamber.

Is there an after market barrel that doesn’t have this hole? If so, any quality choices for a decent price?
6/23/2026 8:50:32 AM EDT
[#1]
Not a barrel, but I ran a Calculated Kinetics DOGTOG optic plate on my M&P2.0 and it featured an integrated front-facing shelf (deflection table) that extends up just in front of the red dot. This acts as a blast shield to deflect hot gas, debris, and carbon buildup away from the optic's glass.

https://www.calculatedkinetics.us/products/smith-and-wesson-m-p-2-0-dogtag-optic-plate

May be cheaper than buying a whole barrel to solve this issue. I do not recall having much gas getting onto my RMR glass while running their plate. Though I never saw if it gets bad while running suppressed.

If going the barrel route, might as well pony up and get an APEX gunsmith fit barrel at that point, but yes pricey.
6/23/2026 9:47:28 AM EDT
[Last Edit: xCLAYBUSTERx][Edited] [#2]
Get it welded and blended if its a good barrel, otherwise order an Apex.

https://dscgunworks.com/products/weld-blend-loaded-chamber-indicator
6/24/2026 10:52:29 PM EDT
[#3]
Quote History
Originally Posted By KissMethod17:
Not a barrel, but I ran a Calculated Kinetics DOGTOG optic plate on my M&P2.0 and it featured an integrated front-facing shelf (deflection table) that extends up just in front of the red dot. This acts as a blast shield to deflect hot gas, debris, and carbon buildup away from the optic's glass.

https://www.calculatedkinetics.us/products/smith-and-wesson-m-p-2-0-dogtag-optic-plate

May be cheaper than buying a whole barrel to solve this issue. I do not recall having much gas getting onto my RMR glass while running their plate. Though I never saw if it gets bad while running suppressed.

If going the barrel route, might as well pony up and get an APEX gunsmith fit barrel at that point, but yes pricey.
View Quote



Interesting. Thanks for the tip.
6/27/2026 10:02:07 AM EDT
[#4]
I have a Calculated Kinetics plate on my pistol and it seems to keep the carbon off the lens as advertised. Other than that I'd go with an APEX barrel like suggested.
7/30/2026 11:51:53 PM EDT
[#5]
I have one of the cc dog tag plates for my m&p and it does a real good job, not perfect but night and day from the factory plates.

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