Bolt tool manual - Fulcrum Concepts · PDF fileand breech bolt until the pin makes contact with the firing spring. ... lock the pushpin into position by securing the pin with a 1/4”

www.fulcrumconceptsllc.com

GAU-19 BREECH BOLT ASSEMBLY

FIXTURE

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GAU-19 BREECH BOLT ASSEMBLY FIXTURE

Easy to use fixture simplifies the reassembly of the GAU-19 Breech Bolt Assembly Fixture as well as eliminates the safety hazard associated with reassembling the breech bolt without the proper tools. Compact, lightweight design allows users to securely lock the bolt in place and compress the firing spring while keeping both hands free to insert the retaining pin and complete reassembly.

PRODUCT WARRANTY INFORMATION

Fulcrum Concepts LLC (FCLLC) warrants to the Original Purchaser of the FCLLC product (herein called the “Unit”) that such Unit, and

all parts thereof, will be free from defects in material and workmanship under normal use and service for a period of one (1) year from the date of shipment of the Unit to the Original Purchaser. During

this one year warranty period, FCLLC will repair or replace any defective part or portion returned to FCLLC by the Original

Purchaser which FCLLC determines was defective due to faulty material or workmanship.

CAUTIONS AND WARNINGS DISCLAIMER

• Failure to follow the breech bolt reassembly instructions in the General Dynamics GAU-19 maintenance manual and the following instructions could result in weapon system damage and/or damage to equipment.

• Always use eye protection • Take proper caution when inserting the straight pin into the body

of the breech bolt carrier, the screwdriver can slip causing injury and/or damage to equipment. Use light pressure, do not attempt to force the pin. Pin damage due to negligence will not be covered by the product warranty

• Failure to properly align the push pin before first use can damage the device and/or the breech bolt

• Always use the device on a flat and stable surface



Item Description Part Number Source Contact info

1 Base 000015DA-101 FCLLC www.fulcrumconceptsllc.com 804.785.1063

2 Press fit ball plunger

CL-3-PBP-2 Carr Lane www.carrlane.com

3 Pin 97395A708 McMaster-Carr

www.mcmaster.com

4 Latch 000015DA-103 FCLLC www.fulcrumconceptsllc.com 804.785.1063

5 Push Pin 000015DA-105 FCLLC www.fulcrumconceptsllc.com 804.785.1063

6 Nut, Jam MS35649-2254 McMaster-Carr

www.mcmaster.com

7 Clamp, push pull

CL-253 Knu Vise www.knuvise.com


Directions for use 1. Assemble the GAU-19 Breech bolt as per the GD manual. Beginning

with task 4-7.6.1 (page 152) through step 4-7.6.6.7 step b (page 154) 2. Compress firing spring with the breech bolt cam follower enough to

align the pinholes of the cam follower and breech bolt. 3. Insert the tapered portion of the straight pin through the cam follower

and breech bolt until the pin makes contact with the firing spring.

Warning Failure to align the pinholes of the cam follower and breech bolt prior to

inserting the assembly into the fixture will make reassembly of the breech bolt impossible.

Note

Ensure the smooth side of the straight pin is facing towards the firing spring.

4. Release tension on the cam follower, pin should be placed far enough

into the cam follower to hold the bolt assembly together. 5. Ensure bolt is not “cocked”. 6. Open the latch to the Breech Bolt tool and place the push pull clamp in

the open position. 7. Insert the breech bolt into bolt tool by sliding the track-ways of the

breech bolt onto the rails of the bolt tool. Insert cam follower end first with the exposed pin on the top.

8. Close latch of the bolt tool to secure the breech bolt into place. 9. **This step should only be required for first use**Loosen the jam

nut holding the pushpin in place. Slowly close the push/pull clamp while guiding the pushpin into the opening of the cam follower by hand. Once the pin is in the proper position to make contact with the firing


spring, lock the pushpin into position by securing the pin with a 1/4” box end wrench and tightening the jam nut with a 7/16” box end wrench.

10. Fully compress and lock the push/pull clamp into the closed position.

11. With a screwdriver, push the straight pin into the breech bolt until the pin makes slight contact with the pushpin.

Note

The straight pin cannot be pushed all the way through the breech bolt with the pushpin compressing the firing spring.

12. Unlock and move the push/ pull clamp to the open position. 13. Push the straight pin the rest of the way through the breech bolt

until the head of the pin is flush with the body of the bolt carrier. 14. Rotate the straight pin 180 degrees to lock the pin detent onto the

firing spring. An audible “click” should be heard. 15. Open latch and remove breech bolt from the bolt tool.

Any questions or concerns please contact Fulcrum Concepts LLC

directly at:

Fulcrum Concepts LLC 1776 Patriot Way

Mattaponi, VA 23110 1 (804) 785-1063


Documents

Bolt tool manual - Fulcrum Concepts · PDF fileand breech bolt until the pin makes contact with the firing spring. ... lock the pushpin into position by securing the pin with a 1/4”