SMK - Sportsmarketing Qb78 deluxe .22 Air Rifles

SMK QB 78 Deluxe in .22

This gun has been moderately tuned but remained below 12 ft lbs new seals and valve cap holes expanded

It's not had much use however on demonstration to a potential purchaser recently it ran out of c02 having been in storage a year but fired successfully the previous day when double checking all worked with the co2 that was in it.

Refilled it but the co2 remained in the barrell and would not pass the valve ,no hiss sound when quarter turning the end cap and it won't fire .The trigger operates the hammer which strikes though.

There is NO leak it just retains the co2 in the barrell and I had cause to use grips to remove the filler cap

Removed exhaust valve ..refilled with co2 and the anticipated leak via valve into breach occured.

I thought that would blow any debris.

Refilled with co2 and exhaust valve and again it won't pass any co2 to fire.

Grips again to remove filler cap and degass.

The trigger strikes the hammer .

I'm at a loss as to why unless the brass valve has played up after 2 years of moderate use replacement available from TR robb.

You may well know the issue or wish to purchase a new valve body 30-40 pounds .

I have another universal silencer to add and a basic scope NOT the one in picture ( that's to be kept)

Selling regretfully as a project as suddenly, unexpectedly and embarrassingly not currently working .

You may well know why this or can swap the brass valve etc

Collection Watford Hertfordshire..or arrange YOUR chosen courier at YOUR expense following proof of age etc or send to RFD.

Thanks for looking