Gray PA12
VFC UMP GBB NPAS
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Product Description
NPAS for the VFC UMP GBB.
Understand that 3D printing is not an exact manufacturing method. Some light sanding might be required to make the part fit.
The main body outer diameter of the valve, where the gas passes through, must be between 7 and 6.9mm to fit in your nozzle.
You need to buy one or more set screws M3x6 DIN 916 Steel separate. You can find these online or in a hardware store or at a technical wholesaler. These set screws are really cheap, order of 0.25ct or less. It should be obvious where this is to be threaded into the valve. You need an 1.5mm hex key for this. Make sure you thread it in straigth. The hole for the setscrew is under sized on purpose to ensure a snug fit and preventing the setscrew from turning itself out. The ideal hole diameter is 2.4mm. Check this to be sure. If the hole is smaller due to the inacuraccy of the printing proces, i can reccomend drilling, sanding or filing this to size. Again, make sure you keep the hole straigt and round.
The muzzle velocity with the NPAS turned off is comparable to the stock valve. Ajusting it gives you plenty of room to play around with.
The long tab on the front of the nozzle should naturally fit under the front cross pin when you look into the nozzle from bottom, where the gas router of your magazine connects.
The reason you get 4 in one package is because you might screw one up while making it fit or installing, you have more than 1 nozzle, bolt, etc. or for what ever reason you encounter a printing defect in one of the parts.
Understand that 3D printing is not an exact manufacturing method. Some light sanding might be required to make the part fit.
The main body outer diameter of the valve, where the gas passes through, must be between 7 and 6.9mm to fit in your nozzle.
You need to buy one or more set screws M3x6 DIN 916 Steel separate. You can find these online or in a hardware store or at a technical wholesaler. These set screws are really cheap, order of 0.25ct or less. It should be obvious where this is to be threaded into the valve. You need an 1.5mm hex key for this. Make sure you thread it in straigth. The hole for the setscrew is under sized on purpose to ensure a snug fit and preventing the setscrew from turning itself out. The ideal hole diameter is 2.4mm. Check this to be sure. If the hole is smaller due to the inacuraccy of the printing proces, i can reccomend drilling, sanding or filing this to size. Again, make sure you keep the hole straigt and round.
The muzzle velocity with the NPAS turned off is comparable to the stock valve. Ajusting it gives you plenty of room to play around with.
The long tab on the front of the nozzle should naturally fit under the front cross pin when you look into the nozzle from bottom, where the gas router of your magazine connects.
The reason you get 4 in one package is because you might screw one up while making it fit or installing, you have more than 1 nozzle, bolt, etc. or for what ever reason you encounter a printing defect in one of the parts.
Details
What's in the box:
VFC UMP GBB NPAS
Dimensions:
Success Rate:
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Rating:
Mature audiences only.
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