Exchange or purchase in store only (main part so has to be face to face or exchange, or can be sent to your local RFD. If you want to buy one then send in your old one or get you local RFD to send me a copy of his ticket. I will then enable you to purchase. If you live abroad then just let me know you are abroad so I can then send it abroad but not the UK.

The whole modified SS E. valve, Piercer body, Ev Spring, piercer and body unit for £55.00, High Flow for the SMK QB/XS 78/79 models. This does away with the tube, gauze, filter and steel washer. Do not try to fit the Tube, Filter, washer or gauze into our valve piercer body, we have made ours for more efficiency and power. Helps to bring the gun nearer the UK limit of 12 ft. lbs. Standard they are normally between 6 to 8 ft. lbs. The QB/XS guns can exceed the legal UK limit so keep an eye on the power after any work you do. Bedding in and temperature can affect the power so check regularly. The standard hammer spring can be shortened to reduce the power if required.