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cocofr69

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About cocofr69

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    Adv Member

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  • Country
    France
  1. cocofr69

    WE Gas Blow Back M4A1 Carbine

    @ Nazio: you can get a remplacement outer casing for your mag: http://www.tacticalquartermaster.co.uk/cat...6925981e00b4382 i had this problem, look at the upper side of the square hole on the side of the mag, it's worn because the outer casing is not made of steel, it's too soft. I used a flat screwdriver inserted in that hole to spread a little bit the upper side and it worked fine.
  2. cocofr69

    WE Gas Blow Back M4A1 Carbine

    Right, Tangman just do this: and use some thread lock ( @Eliminator vi, j'ai compris où on met le frein filet )
  3. cocofr69

    WE Gas Blow Back M4A1 Carbine

    http://www.youtube.com/user/Latparts
  4. cocofr69

    WE Gas Blow Back M4A1 Carbine

    Two parts can be broken to cause a auto fire only, the disconnector or the hammer: http://www.airsoftbuddy.com/index_eproduct...products_id=377 http://www.airsoftbuddy.com/index_eproduct...products_id=376
  5. cocofr69

    WE Gas Blow Back M4A1 Carbine

    The pins you see from the external are fake, to access the #127 you have to take out the trigger group.
  6. cocofr69

    WE Gas Blow Back M4A1 Carbine

    Thanks In fact, the barrel is a regular AEG inner barrel, it's a drop in for the bucking and the barrel, no modification needed. You're right, i'm using Solidworks.
  7. cocofr69

    WE Gas Blow Back M4A1 Carbine

    The barrel is held by the usual clip used with AEG: About the nub, i tried to make the same that on the VSR, because The chief said it was the better for accuracy , i tried to find pictures of VSR's hopup and i found this: so i did this: @ The chief: do you think that it's the kind of solid H nub used in the VSR or must i modify it to use a AEG nub ? For the adjustement, it's the same nut as the original HU wich is used to push the arm, this allows to make a drop in hop-up without modifying the bolt or the receiver. To push the arm, there is a new part #115 after the bevelled nut, with a curved shape:
  8. cocofr69

    WE Gas Blow Back M4A1 Carbine

    Hi all, i have think about what could be a hop-up for the WE that uses a regular AEG barrel and bucking: IT'S POSSIBLE !! It needs three new parts, and to modify two existing parts, #111 and #114. So the question is.... is there anybody out there who can machined that parts ? i can give a complete set of blueprints I'm looking by my side to find a another place to make it, i already have one but they are way too expensive.
  9. cocofr69

    WE Gas Blow Back M4A1 Carbine

    Hi there today, i have made the test of removing the rubber #118 and shoot a auto 4-5 BBs burst to see what happens, and this is the result: the BB doesn't fall, it is firmly held by #117. Then, i disassembled the parts to try to mesure the exact position of the BB in the #117, as you can see i have take out all the parts of the hop-up before testing: With a lot of care, i mesured the position of the BB in the #117: and i modified the CAD model: So the difference between the position of the BB after manually cooking and after a burst is about 1mm, the BB is still 0.3mm from the #118 and 1mm from being out of the #117. Of course, during the disassembly and the mesurement, the BB could have moved a bit, so the distance with the #118 could be be slightly different, but the important thing is that the BB is far enough from the end of the #117 to be firmly held by it. After that, i can say that the 117 can hold the BB, and maybe having being designed for it, despite the fact that there is no #118. But this test have been made with a clean #117 and barrel, and i'm convinced that after a few mags with green gas, the silicone will make the BB to slip out of the #117 to the green rubber #118. So the design of #117 can be improved to works correctly by blocking the BB even when full of silicone, there is enough space to fit a lip after the BB.
  10. cocofr69

    WE Gas Blow Back M4A1 Carbine

    Thanks Otto you're right, we see the ridge: in the 3D model: and in the split view: But the BB is not held by the zone before the ridge, but by the zone after it: The zone A is too wide, with a diameter of 6.2mm, to hold the BB, it's the zone B, after the ridge, wich hold the BB. But if the zone B is full of silicone, it will not hold the BB (before taking the pictures, i have clean out the barrel and #117), and then it will be the green dot that will hold the BB, or not, just like you said. The point is to avoid the green rubber #118 to have to hold the BB, and make the #117 to work correctly despite being full of silicone. I think it could be done by adding a lip to #117 (WETTI if you read us ): The problem is to make the lip thin enough to avoid blocking the BB, but thick enough to hold it despite the silicone.
  11. cocofr69

    WE Gas Blow Back M4A1 Carbine

    Hi guys here is my 2 cents about the function of the part #117. I have mesured and drawn the parts of the hop-up : Assemblage_Hopup_WE.PDF - 1.5 Mb On the "detail 1", you can see the position of the BB according to the size of the different parts, it's about 1.5mm away from the green rubber on the gen 1 hop-up, it holds tight in the #117 rubber. To confirm that, i took a picture of the BB after cooking manually, and slowly, the gun: and then, the same view on the 3D model: It seems to be at the correct position on the blueprint... Then, i fired a burst of 3-4 BBs, and took another picture: it seems that the BB is 1mm forward from the last picture, so on the blueprint i pushed the BB 1mm forward, this is "detail 2", and did the same view on the 3D model: The BB is still holding tight in the #117 rubber, it's half a millimeter away from the #118, and 1mm to escape from the #117. So where would be the BB if it's out of the #117 ? I pushed the BB 2mm forward on the 3D model: It doesn't that the BB is so far on the real picture, but till i haven't found a way to mesure the exact position of the BB after the burst, it's only speculation... What i think about the BB falling is that the #117 is the part that hold the BB, and yes, the inertia of the bolt pushes the BB more than a manual cooking. Due to the cylindrical shape of the zone wich hold the BB, a greasy #117 let's the BB pass through, but i think that a lip at the end of #117 could solve the problem:
  12. cocofr69

    WE Gas Blow Back M4A1 Carbine

    +1 We don't need new bodies by now, we need steel parts ! More peoples experiments trigger group issues every day, the trigger parts are made of pot metal, here is what we really need: -steel #54 -steel #57 -steel hammer -redesigned steel #59 -stronger firing pin's spring
  13. cocofr69

    WE Gas Blow Back M4A1 Carbine

    Thanks Otto
  14. cocofr69

    WE Gas Blow Back M4A1 Carbine

    Hello all According to the idea of Renegadecow, here is the shape of a improved part #59: I'm going to see if i can make it laser cut and how much it will cost for a stainless steel part.
  15. cocofr69

    WE Gas Blow Back M4A1 Carbine

    This is a typical part #117 problem. Disassemble your hop-up, check and clean the part #117, re-assemble the hop-up and check that it hold correctly the BB (no need to put the HU chamber back in the body and outer barrel to check). If it's not holding the BB, then you will have to change the #117.
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