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How to cover up the "scarred" area on AR 15 barrel after removing the front sight block

When changing out parts on your AR 15 upper (for example adding a free float handguard/ quad rail), you may need to remove the front sight base and add a low-profile gas block. Unfortunately, this will often leave you with exposed taper pin holes, and since most manufacturers don't "parkerize" under the FSB, you end up with rings of bare metal. The result is an unsightly exposed area on the barrel that looks something like this:

The best way to fix this issue? Use a longer low profile gas block, that is specifically designed to cover this area and protect and strengthen the barrel in this area.

AT3 Tactical sells a low profile gas block that suits this need perfectly! Check out the AT3 Long Low Profile Gas Block!

One Last Tip

If there's anyone that knows the AR-15 platform, it's the US military. As a special offer for our readers, you can get the Official US Army Manual for AR-15/M4/M16 right now – for free. Click here to snag a copy.
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2 comments

Roger

September 22, 2013

Cool – I’m going to get one of these. Thanks for the info.

Xiao

June 18, 2015

This rain barrel is so qianut and pretty I’d love to have one on my property, but perhaps they’re more expensive than the plastic ones.I do think it’s worthwhile having one..I also keep all my vegetable peels to make my own compost and mix my chickens droppings in there too to make it really rich.I’ve also found a way of saving $830 a year, I got a Tracfone SVC Samsung T155G for Xmas with larger keys and letters on the screen whic is for seniors. This phone costs $15 and I only pay $7/month for service. If you don’t use this phone a lot then you can really save a lot of money and at the end of the year and you end up with a big nest egg, unlike with using a cell phone contract.