How to Install an AR-15 Front Sight

Larry Potterfield • August 28, 2023
Guns Gunsmithing

Installing the front sight on an AR-15 is an easy job if you have the proper installation tool. Start by lubricating the front sight spring and detent with the dab of lithium grease.

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Lubricate the parts

Then place the spring and detent into the recess in the front sight base.

Image relating to How to Install an AR-15 Front Sight
Insert the spring

The spring fits inside the cavity on the bottom of the detent.

Image relating to How to Install an AR-15 Front Sight
Insert the detent

Now screw the front sight in until the detent prevents you from going any farther.

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Screw in the sight

This is a front sight adjustment tool:

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Sight adjustment tool

The prongs on the front engage the notches in the site forcing the detent down, allowing us to adjust the front sight to the desired height.

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Tighten the sight

Simply place the tool over the site and turn it clockwise until the bottom of the site is flush with the base, for now.

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Sight is flush

--Larry Potterfield

Related Products

  1. Tetra Gun Grease 1 oz Tube $7.99
  2. AR-STONER Front Sight Post A2 Square AR-15, LR-308 Matte $4.99
  3. AR-STONER Front Sight Detent AR-15, LR-308 $2.99
  4. AR-STONER Front Sight Detent Spring AR-15, LR-308 $5.99
  5. Troy Industries Battle Sight Adjustment Tool AR-15 $4.99

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Larry Potterfield

Larry Potterfield is the Founder and Chairman of the Board of MidwayUSA. He and his wife Brenda, both country kids from Missouri, turned their passion for shooting sports into a career by opening a small gun shop in 1977 that would eventually become the industry-leading internet retailer it is today. For over 45 years, MidwayUSA has maintained an unyielding focus on Customer Satisfaction and continues to offer JUST ABOUT EVERYTHING® for Shooting, Hunting and the Outdoors.

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