Airgun Accuracy

Only accurate airguns are interesting!

Walther LG 400 Hammer Bounce

This movie shows the underside of a Walther LG 400 breechblock. When the hammer is released (at 49 seconds into the movie, sorry for that) you can see it bouncing 2 or 3 times. Each bounce opens the valve and releases some air that is not effectively used to propel the pellet because this has already started off in the barrel. Reducing hammer bounce can save a lot of air and increase the number of shots from an aircylinder fill. I made an anti bounce hammer for my Airarms S400 FAC which increased the shotcount from 38 to 68 shots per 200 bar fill.

Walther LG 400 Hammer Bounce movie  

Unfortunately photobucket does not support this link anymore.





4 thoughts on “Walther LG 400 Hammer Bounce

  1. how much is it

    • How much is it? You mean to buy a Walther LG400? Not knowing where you live makes this a difficult question. I’d suggest you do a google search. For Germany retail prices can be found here: . The LG400 Alu stocked Economy version is 1560 Euro/1750 US Dollar/1126 British pounds. The cheapest LG400 is the alu stocked LG400 Blacktec version for 1240 euro/1390 USD/895 British pounds (all google currency converted prices). But there are many shops available in Germany and around the world that will sell and send you the LG400.

  2. Can you explain how you did the anti bounce hammer?

    • Hi Michael,
      My anti-bounce hammer is for the Airarms S400, not for the Walther rifles. It is an hammer made of two parts that slide over each other. The inner part is made from bearing bronze and pushed by the hammer spring and slides over the hammer rail. The outer part is shorter and, is pushed forward by the longer bronze inner part. When the inner part hits the front, and comes to a stop, the outer part slides forward and hits the valve stem. The outer part will not bounce because it is not in contact with the hammerspring.
      I have a drawing somewhere, will post it here. I noticed that the original thread on the Airarms Owners Club forum has been deleted.

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