The Echo1 M14 Combat Master is one of the more popular DMR rifles in our line up. Recently we covered the M14 series in a M14 blog and we were flooded with emails about the M14 Combat Master and more info on it so we answered your questions. Brian has gone through the entire rifle from the outside to the inside and putting it all back together again to help you through the steps if you want to upgrade or take apart your Combat Master M14 yourself.
Check out the video above to get the info you need but there are some side track videos on just the M14 Hop Up Unit and the M14 Gearbox Assembly to keep the video a little shorter so make sure you check those out as well.
As pointed out in the video it is very hard to release the Anti Reversal latch like you would for a regular V2/ M4 gearbox to reduce spring tension and better keep the parts in place. the parts will jump out of place but with the video will help you put everything back in place.
Brian pointed out how the Modify V7 Anti Reversal Latch would be the best part to install and use if you are going to be working on your rifle and want to keep your gearbox neater. Notice the slot on the top of the axle? The slot is for a flat head screw driver to allow you to twist the latch away from the bevel gear stops from the outside of the gearbox. All the Modify Anti Reversal Latches have this feature.
The M14 Combat Master, SOC16 and traditional M14 all use the Version 7 type gearset which is a smaller Spur gear as shown at 13:15. You will have to keep this in mind when buying upgrade gears which are mostly torque up styles to take advantage of the DMR or sniper roles the M14′s can do on the field.
The right side of the M14 gearbox will have the selector switch and safety parts and several other small parts that are shown in the Gearbox Assembly video.
The left side the M14 Gearbox will be more time consuming and have more parts. The cut off lever and trigger contact springs will be very tricky to install without them flying across the room so make sure you take your time. All the parts will be able to freely move and slide when assembled before you install and screw on the cover plate. Make sure the four screws for the cover plate are in the correct placement as shown in the video here 31:25
Now that you have the gearbox assembled and ready to go you can finish putting the M14 Combat Master back together in the video that picks up here 29:25. Just remember to take your time and make sure everything fits together nice and easy and nothing will have to be forced or made to fit. With the correct tools and parts you can do just about anything with your M14 Combat Master.
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Written by Brian Holt