Airsoft Gun Diagnostics

If you use your airsoft guns on a regular basis sooner or later you will experience a broken airsoft gun. Properly diagnosing these issues can save you money and time. Preventative maintenance can help keep your airsoft guns firing under most conditions but the time will come when a bench repair is needed. If you need more airsoft gun repair tips visit us at:

http://www.airsoftgunrepair.com/

Here are some simple steps you can use the next time your airsoft gun needs troubleshooting:

Airsoft Gun Performance Diagnostics:

Symptoms = Airsoft Gun jams allot, Gun is not accurate and has a noticeable decline in distance. BB's may roll out of the barrel.

Diagnostics and Solutions:

1. Check, Clean and Oil Barrel

2. Remove inner barrel and hop up unit. Check bucking and re-align or replace as needed. Check hop up nub for wear.

Symptoms = Airsoft Gun Cycles (fires) but no bb's come out

Diagnostics and Solutions:

1. Check for Jammed BB's in barrel

2. Check magazine and magwell for problem.

3. Turn gun upside down and shine flashlight in bb entrance in magwell (where you insert your magazine) with hop up dialed off dry fire gun once or twice and see if the air nozzle is moving back and forth. If not tappet plate is most likely broken...bench repair needed.

Symptoms = Airsoft Gun Does Nothing

Diagnostics and Solutions:

1.Check battery

2.Check Fuse

3.Check all connections

4.Check motor leads

5. Bench repair needed

The Illustrations to the right show you where to make your airsoft motor adjustments I address in the next paragraph.

Symptoms = Airsoft Gun Makes a loud squealing noise when trigger is actuated.

Diagnostics and Solutions:

1. Make sure hand grip and all parts are tight and have no wobbles.

2. Perform airsoft gun motor adjustment by turning motor adjustment screw clockwise until resistance is felt. Now turn counter clockwise 2 or 2 1/2 turns. Try to fire gun. If you feel the motor trying to work continue adjusting 1/4 turn at a time until gun sounds smooth when firing.

3. Bench repair needed

Just a few more tips to keep in mind for the proper preventative maintenance of your airsoft gun:

1. Never Use Used BB's

2. Do not use .12 gram bb's in any gun that shoots 300 FPS

3. Only use seamless BB's

4. Stock guns will typically work best with .20 gram bb's

4. Oil your airsoft gun after each use

5. Clean your airsoft gun barrel after each use

Well thats all for now...Hope it Helps

Armsdealer...Out

MP7 Airsoft Gun Repairs

The MP7 series is a compaq little mini airsoft sub machine gun. These are now being manufactured by at least 4 airsoft gun companies including Well, TM, Galaxy and Tactical Force airsoft. The stock FPS averages about 250 FPS with a ROF of around 600 bb's a minute. This is perfect for indoor CQB style airsofting.

I have had the opportunity to perform repairs on this mini machine gun and I have to say they are fairly difficult to work on. The internals consist of a 4 gear transfer unit instead of the more common 3 gearset found in other AEG's. Airsoft Gun Parts for the MP7 can be hard to find as well. I do not recommend upgrading these above 300 FPS as the gear shafts and pinion gear are maxed out at this velocity.

There is nothing standard on this gun compared to other gearbox versions. Even the hop up units are unique to this gun. I have added more MP7 airsoft gun repair pictures here for you to use should you decide to attempt upgrades or repairs on your own. The mini size gearbox is easiest to remove from the rear of the gun once you have removed the sliding stock. Gear shimming is crucial to the proper operation of this gearbox and should be performed very carefully.

The MP7 is an extremely fun airsoft gun and great to carry as a secondary back up weapon. You can expect if using .12 gram seamless bb's to accurately shoot 60 to 70 feet. As I said above these are great close quarters weapons for indoor airsoft games. I would suggest getting one or two extra 7.2 volt batteries as these small packs seem to die after a few hours of sharing the welts with friends.

Till next time....

Armsdealer Out!

Cracked Airsoft Gearbox Repair Facts

Airsoft Gun Fact: Standard and re-inforced airsoft gun gearboxes are not engineered or designed to handle the stresses created by airsoft gun upgrade velocities over 400 FPS.

Actually I find most metal gearbox airsoft guns, If properly upgraded to 350 FPS and with proper hop up maintenance to be the longest shooting and most durable working upgrades for most airsoft OEM gearboxes. The Re-inforced gearboxes do absorb vibrations and the increased weight helps with noise dampening, but the spot that breaks on most V2 boxes was not really re-inforced by this upgrade leaving them just as susceptible to nose cracking as the non re-inforced versions.

Systema has a nice airsoft unit engineered to shoot 565 FPS and it seems to work and last....However this does not mean that all you need to do is put systema parts in your standard AEG gearbox and you can achieve this as well. Most gearboxes on the market are engineered with 400 FPS being the Maximum and 350 FPS being the recommended. Most US based airsoft gun service centers will not upgrade above 400 foot per second without voiding any warranty programs.

I prefer to upgrade my airsoft guns to the 350 FPS point and raise the rate of fire to 20 to 25 bb's a second with steel high speed gears. The Modular airsoft gears are fantastic and last a very long time when installed this way. The spring I use is one that will land my guns in the 330FPS range and the addition of a metal spring guide with a thrust bearing rounds the upgraded gun out to 345-350 FPS when using .20 gram bb's. Plenty of firepower for any airsoft game!

One final note on the subject...The new KWA 8MM V2 gearbox units seem to have incorporated what might be a solid engineered solution to mechbox nose cracking issues by modifying the actual nose of the gear box and creating an interlocking set of staggered fingers that seem to absorb the shock and vibration created by the piston. Not sure what the actual limitations are on these but one can contact KWA USA and I am sure they would be happy to provide the new gearbox specifications. Better yet just buy one of the new KWA M4's as they will keep you in the game sharing welts...Long Time!

Armsdealer...OUT!