hi guys a friend of mind asking ....please whats mean a stamp Hull Cartridge weihurach air rifle? recently he bought a HW99 from our local RFD when he brought it with him in our local shooting club everybody said to him that your rifle is NOT AUTHENTIC because it doesn't carry the Hull Cartidge stamp on the barrel!!!!???...he think seriously now to return the rifle back to the RFD store...but I said wait and let me ask the experts first? please can you help...... is his air rifle authantic german made or just imitated (faked) weihurach rifle?????...... cheers