SG 552-1 Commando Trigger Replacement

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Step-by-step instructions on how to replace the trigger in a SG 552-1 Commando.

  • Author: Anika Morris
  • Time required: 25 minutes
  • Difficulty: Difficult

This guide will be showing step-by-step instructions on how to get to and replace the trigger of the airsoft gun.

Sections
Tools
Image #1

Edit Step 1 Gearbox  ¶ 

  • Using a flathead screwdriver, remove the pin holding the hand guard in place.

    • To remove this, turn the pin clockwise and push it through at the same time.

  • Remove the hand guard.

Image #1

Edit Step 2  ¶ 

  • Using a Phillips #1 screwdriver, remove the two 8mm screws above the hand guard on both sides of the gun.

    • There should be four total.

Image #1

Edit Step 3  ¶ 

  • Turn the gun over so that you are facing the bottom of the gun.

    • Using a Phillips #1 screwdriver, remove the following screws:

      • Remove the 8mm screw that is located directly underneath the cocking lever.

      • Remove the 8mm screw located beside the screw you just removed.

Image #1

Edit Step 4  ¶ 

  • Carefully tug on the tip of the gun and pull the barrel and its cover out.

Image #1

Edit Step 5  ¶ 

  • Locate the hand grip.

  • Using a Phillips #0 screwdriver, remove the two 6mm screws at the bottom of the hand grip.

  • Slide the cover off.

Image #1

Edit Step 6  ¶ 

  • Pull the motor out of the hand grip.

  • Using a Phillips #1 screwdriver, remove the two 5mm screws inside of the hand grip.

Image #1

Edit Step 7  ¶ 

  • Locate the pin holding the folding stock in place.

  • Using an allen wrench or something small, carefully push the pin out.

Image #1

Edit Step 8  ¶ 

  • Using a Phillips #1 screwdriver, remove the 20mm screw behind the folding stock and above the gearbox.

  • Remove the cover that was held on by the screw.

Image #1

Edit Step 9  ¶ 

  • Using a flathead screwdriver, remove the two 5mm screws beside the safety switch on both sides of the gun.

  • Slide off the piece that was held on by those screws.

Image #1

Edit Step 10  ¶ 

  • Using a small allen wrench, carefully unscrew the screws holding the safety switch in place on both sides of the gun.

    • The screws do not have to be taken out all the way, just slightly loosen them until you are able to pull the switch off.

Image #1

Edit Step 11  ¶ 

  • Using a Phillips #0 screwdriver, remove the two 6mm screws that were underneath the safety switch on both sides of the gun.

  • Carefully remove the pieces that were held on by the screws.

Image #1

Edit Step 12  ¶ 

  • Pull apart the cover when pulling the gearbox out.

  • Pull the gearbox out.

    • The gears will fall out when taking the gearbox out. Careful not to lose them.

Image #1

Edit Step 13 Trigger  ¶ 

  • Using a Phillips #1 screwdriver, remove the following screws:

    • Remove these four 15mm screws.

    • Remove this single 8mm screw.

  • Using a Phillips #0 screwdriver, remove the following screws:

    • Remove this single 14mm screw.

    • Remove this single 3mm screw.

  • Detach the pieces unscrewed from the gearbox.

Image #1

Edit Step 14  ¶ 

  • Remove the cover over the trigger.

  • Remove the safety piece.

  • Using a Phillips #1 screwdriver, remove the 18mm screw beside the trigger.

Image #1

Edit Step 15  ¶ 

  • Remove the metal piece.

    • Removal of this piece will permanently damage the metal piece.

  • Remove the cover for the gearbox.

Image #1

Edit Step 16  ¶ 

  • Pull the trigger off the gearbox.

To reassemble your device, follow these instructions in reverse order.

For more information, check out the SG 552-1 Commando device page.

Required Tools

Phillips #00 Screwdriver

$5.95 · 50+ In stock

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6-in-1 Screwdriver

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