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Questions & Answers
Is Optics Planet an authorized Sig dealer, will they honor their 3 yr warranty if it's bought here? Does it come with batteries for life? Thanks! Manufacturer Answer

Yes, the 3 year manufacture warranty on the LG-420G is valid if purchased through Optics Planet.

by Crimson Trace, Manufacturer, April 14, 2022
Are there any holsters that the p320 with this Laserguard will fit? Expert Answer

Unfortunately we do not have any holsters that will fit the gun with this laser on it at this time.

by Ethan C., Gear Expert, June 14, 2019
Customer Reviews
Helpful Positive Review
review-green laser by Bobbie, October 7, 2018
This is my second laser that I have purchased from you. You have change your shipping and it is very slow, or I should say slower than usual. The crimson trace laser is excellent as usual, I do not like changing a laser from one pistol to another. If...
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1/1 found this helpful
Helpful Positive Review
JG-420G - Thumbs UP by Bob, Verified Owner, June 16, 2018
The Crimson Trace LG-420G fit was very tight and secured. After putting about a 100 rounds down range the zero did not deviate the entire time I was shooting. I would recommend this Laserguard to anyone interested. I also like the separate ON/OFF swi...
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1/1 found this helpful
Helpful Positive Review
Crimson Trace Laserguard is Awesome! by Drober30, June 3, 2018
I have been installing the Crimson Trace Laserguards on all my guns, the ability to quickly acquire a target while maintaining your situational awareness is what makes adding a laser so great. Without a laser, you must get you iron sights up and on t...
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1/1 found this helpful
Helpful Positive Review
The Best Laser for Your Pistol by VNCBC, May 8, 2018
Easy, and intuitive activation. Strong laser and very visible even in day light. Much better than rear push button styles. This laserguard looks like it was made with the pistol. Installation is easy with the provided Allen wrench. The hard pa...
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1/1 found this helpful
Most Recent Reviews
Crimson Trace LG-420 laserguard by JAMES, Verified Owner, June 10, 2025
I am very impressed with this laser sight for my sig sauer P320. For one thing, the green laser is much stronger than a red laser. The nicely discounted price from the MSRP is also advantageous. Installation was easy. When dialing in the sight, I ...
Read More...
Most Recent Reviews
crimson trace LG-420G by Floody, Verified Owner, November 9, 2024
Easy to install. Already zeroed. Love the ease of use. Green laser is easy to see in most conditions. Not bulky.
Read All 10 Reviews
Color:
Black
Beam Color:
Green
Laser Output:
5 mW
Battery Type:
1/3N Lithium, 357 Silver Oxide
Gun Make:
SIG Sauer
Gun Model:
SIG Sauer P320
Condition:
New

Code: CT-LS-LSGS42G-LG-420G

MPN: 01-7780-1

UPC: 610242009084

List: $329.99Save 13%
$285.95

Product Info for Crimson Trace LG-420 Laserguard, Green Laser Sight For Sig Sauer P320

The Crimson Trace LG-420G Laserguard is a powerful green laser sight for the Sig Sauer P320 pistol, (also known as the M17 in full-size and M18 in compact). The LG-420G is quickly and easily user-installed in moments and offers a front activation button powered by Crimson Trace's Instinctive Activation technology. The laser sight will provide two (2) hours of battery life with a single 1/3N Lithium battery and features a quick change battery cover for replacement without removal of the unit. As with all Crimson Trace laser sights, the LG-420G is completely user-adjustable for windage and elevation. This model features a Master On/Off switch for completely powering down the unit to train without the laser sight. Fits all P320 models except subcompact frames.image

WARNING: California`s Proposition 65

Specifications for Crimson Trace LG-420 Laserguard, Green Laser Sight For Sig Sauer P320:

Manufacturer: Crimson Trace
Color: Black
Beam Color: Green
Finish: Polymer Housing
Laser Output: 5 mW
Battery Type: 1/3N Lithium, 357 Silver Oxide
Battery Life: 2 hours, 2 hours
Battery Quantity: 2
Gun Make: SIG Sauer
Gun Model: SIG Sauer P320
Fabric/Material: Polymer
Condition: New
Mount Type: Trigger Guard Mount

Features of Crimson Trace LG-420 Laserguard, Green Laser Sight For Sig Sauer P320:

  • Product Type Laserguard
  • Material Polymer
  • Color Black
  • Activation Location Front Activation
  • Master On/Off Switch Yes
  • Attachment Trigger Guard
  • Free Batteries For Life Yes
  • Battery Type One 1/3N Lithium or Two 357 Silver Oxide Batteries
  • Finish Polymer Housing with Rubber Overmold Activation Pad
  • Installation User Installed
  • Laser Battery Life Over Two Hours
  • Activation Mode Pressure Activated
  • Sighting Factory Sighted at 50'
  • User Adjustable Windage and Elevation
  • Warranty Three Year Full Warranty
  • Wrench Size 0.05
  • Dot Size Approx
  • 0.50" at 50'
  • Included Accessories:
  • Owners Manual
  • Battery
  • Cleaning Swabs
  • Adjustment/Instalation Tool

Package Contents:

  • Crimson Trace LG-420 Laserguard, Green Laser Sight For Sig Sauer P320
  • P320 - Does NOT fit Sub Compact

Crimson Trace LG-420 Laserguard, Green Laser Sight For Sig Sauer P320 Orderable Models

List of Orderable Models

  • Crimson Trace Laserguard Green Laser Sight, Black, 5mW, 515-532nm, For Sig Sauer P320, LG-420G , MPN: 01-7780-1 , UPC: 610242009084 , Code: CT-LS-LSGS42G-LG-420G

Crimson Trace LG-420 Laserguard, Green Laser Sight For Sig Sauer P320 Unavailable & Discontinued Models

List of Unorderable Models

  • DEMO, Crimson Trace Laserguard Green Laser Sight, Black, 5mW, 515-532nm, For Sig Sauer P320, LG-420G , MPN: LG-420G-DEMO , Code: CT-LS-LSGS42G-LG-420G-DEMO
  • USED, Crimson Trace Laserguard Green Laser Sight, Black, 5mW, 515-532nm, For Sig Sauer P320, LG-420G , MPN: 01-7780-1-EDEMO , Code: CT-LS-LSGS42G-LG-420G-EDEMO-RE-B
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