I modified 3 Glocks and so I decided to make a guide that will help you to install parts easily. Because all the Glocks share many same parts and are designt identically, I will make a guide for one semi-automatic and one automatic Glock. I will go for G17 and G18C.
This guide is also useful if you want to totally strip down your gun in order to clean it, relube it or you need a guide for disassembly to fix a problem.
I will explain step by step what do you need to remove in order to replace all the possible upgrades for each gun. + I will give you some tips here and there in order to make your life easier. Oh, and please pin this thread so that people will easily find it.
Ok, lets start. I will attach an original KWA diagram of gun assembly. We will use this, because the easiest way to tell which part must be removed, is by saying its number. So everytime you will see "you must remove part #xx", you will look up for diagram which part I mean. It is recommended that you print the diagram. It saves you some scrolling.
Lets begin with visually most noticeable mod. The slide.
1.1. Removing slide is the basics, but I will explain it again. First, you pull down part #51 on both sides of the frame, than with other hand pull the slide back and push it back forward. It will go straight off.
1.2. Remove the spring assembly (#28) and outer barrel (#147)
1.3. Unscrew the bolt #18.
1.4. Lift the blow back unit #88 together with nozzle (#22) out from the slide.
1.5. Put the bb unit #88 together with nozzle #22 into the new slide.
1.6. Screw back the bolt #18.
1.7. Remove the rear sight by sliding it off (either to the left or right side) the slide by gentley push and attach it to the new slide same way.
1.8. Front sight is glued and you can use flat screwdriver to pop it out from the inside the original slide. It is recommended that you glue it back to the new slide.
1.9. Reassemble the outer barrel #147 and spring assembly #28.
1.10. Align the new slide on the frame rails and pull it back like you are reloading it. It will :censored2: back and you are done.
Enhanced recoil spring is another simple mod.
Some enhanced recoil springs come with steel rod and basically everything you have to do is to swap the whole #28 spring assembly with new one. Do not forget to install back the round rubber part that comes with the original rod but is not listed on the diagram.
So lets assume you bought only an enhanced recoil spring, and you wish to install it.
2.1. First you pull back the original spring #29 in order to make an easier access to the pin #33.
2.2. Push out the pin #33.
2.3. The whole assembly #28 will fall apart.
2.4. Replace the spring and reassemble.
This is a bit tough.
3.1. Follow the instructions for removing bb unit #88 out of the slide - 1.1. to 1.4.
3.2. Once you lift the bb unit #88 together with nozzle #23, you slide out the nozzle.
3.3. Put the springs #23 somewhere safe, all you need now is nozzle #22.
3.4. Push out the pin #26. You shold hold a finger or apply tape on the end of the nozzle, because after removing pin, parts #24 and #25 will jump out.
3.5. Replace the original floating valve #24 with new one. When I replaced the spring #25, my gun didnt work properly so it is up to you if you also replace spring or not (my Airsoft Surgeon rocket valve came with enhanced spring).
3.6. After you put the spring and new valve back to nozzle, take a toothpick and push the floating valve down.
3.7. Put back the pin. It helps alot, if you find someone that will hold a nozzle for you while you are doing this.
3.8. Slide the nozzle back to the bb unit and also springs #23. This is a very good chance to lube the nozzle rails inside the bb unit #88.
3.9. Follow instructions 1.5. to 1.10. to reassemble.
4.1. First you must take out the outer barrel #147.
4.2. Than hold the part #10 and pull out the inner barrel assembly.
4.3. Remove the pin #13 and take off the part #10. Watch for the little spring #12 it will pop out!
4.4. Remove the part #15. It will reveal hopup rubber #14 and ball #16.
4.5. Take off #14 and #16.
4.6. Take off part #11 and put it immidiately on the new barrel. Be carefull how your barrel is turned.
4.7. Put the hopup rubber #14 back and don't forget for the hopup ball #16.
4.8. Put back part #15. over the hopup rubber and ball.
4.9. Put spring #12 into part 10# the way it is showed on diagram.
4.10. When you will put the barrel on the part #10, the bottom part with pin hole from part #15 will squize that spring forward.
4.11. Put the pin #13 back in.
4.12. Take off rubber part #9 from original inner barrel and install it on the new one.
4.13 slide the new inner barrel into the outer barrel and reassemble the gun. I suggest lubbing part 10 before that.
5.1. Take apart the gun. This time, we will work on the frame #102.
5.2. Push out pins #86 and #59. They are the only pins on the frame so you cant miss them.
5.3. Disconnect spring #64 that holds part #92.
5.4. You lift out the whole assembly by holding the part #65 and part #93.
5.5. Take out the pin #76 and lift out the hammer assembly by holding parts #92 and #94.
5.6. Replace the original hammer spring #75 with new one.
5.7. Hold together parts #75, #94 and #92. This will be a bit tricky but it is the easiest way.
5.8. Make sure the spring sits right (I added a picture below), than push everything down into assebly. Also make sure that part #78 in positioned correctly and sticks out throuh the opening of the part #93. This is the part that hits the magazine valve. So if you position it wrong, gas will not be released.
5.9. The twisted spring will now want to push everything back up, so you must hold all three parts down, until you put the pin #76 back in. It is easier if someone else puts the pin in while you are holding parts #75, #94 and #92 down.
5.10. After that, by holding assembly by parts #65 and #93 put everything back in.
5.11. Push the pins #86 and #59 back.
5.12. Reconnect spring #64 that holds part #92.
5.13. Reassemble the gun.
NOTICE! During the assembly, pin #69 might fall out and cause parts #65, #66 and #55 (trigger) to fall apart. You can tape the part #65 to prevent pin from falling out. Also! Remember how the spring #68 is positioned. The narrow end goes around the trigger #55 and hooks on the part #65, the twisted end hooks on to the hole on part #66. This spring likes to jump out so be careful how you install it back.
This is a part #27.
6.1. Follow the instructions for removing bb unit #88 out of the slide - 1.1. to 1.4.
6.2. Once you lift the bb unit #88 together with nozzle #23, you slide out the nozzle.
6.3. Put the springs #23 somewhere safe, you don't want to lose them.
6.4. Take a look at the part #88 and you will see a round rubber part #27.
6.5. Replace the original piston #27 with new one. You can help yourself putting it on by using lube.
6.6. Make sure the new rubber piston is vell lubed.
6.7. Slide the nozzle back to the bb unit and also springs #23. This is a very good chance to lube the nozzle rails inside the bb unit #88.
6.8. Follow instructions 1.5. to 1.10. to reassemble.
STEEL MAGAZINE CATCH RELEASE
This is a part #70.
7.1. Take apart the gun. This time, we will work on the frame #102.
7.2. Trough the opening where the magazine goes, look into the gun. You will see a needle-like part #72 sticking out.
7.3. Take a small pointed screwdriver and push the part #73 at the side so it will pop out. You can push it to one side only.
7.4. Push the part #70 like you are releasing a magazine and take it out.
7.5. Now you cannot just slide the new part #70 back in, because part #72 is on the way. So you have to use a flat screwdriver or something to lift it. Also look at the part #70 you will see a cutted opening where the part #72 jamms.
7.6. By using screwdriver, guide part #72 into the opening on the part #70, mentioned before, so that is jamms.
7.7. By replicating you are releasing a magazine, test if new part #70 works and returns back into position. If not, part #72 is not jammed properly.
NOTICE! I had to shorten my part #72 for about 1,5mm in order to jam it, because Guarder steel mag catch release did not had as deep cutted openings as the original part.
8.1. Release all the gas from the magazine, either by shooting or pressing the valve #216. That is the same valve we are replacing.
8.2. After the magazine is empty, use special tool to unsrew the original valve #216.
8.3. Take a new hi-flow valve, lube it and srew it back in, using special tool.
NOTICE! I use THIS Valve key, but there is also THIS one available. However, you can also make a similar tool by cutting and reshaping a fork. But you will scratch valve and magazine.
Edited by airborne101, 11 March 2013 - 12:36 PM.