The main and perhaps only difference between the 390 and 303 is the inclusion of a 'excess' gas vent valve which is, as you say, in front of the cylinder - that's pretty much it. Regards ... Geek
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The main and perhaps only difference between the 390 and 303 is the inclusion of a 'excess' gas vent valve which is, as you say, in front of the cylinder - that's pretty much it. Regards ... Geek
PauL H. - Shotgoon
Brownings: 1999 Ultra XS; 2004 B525 Field; 2010 Maxus Hunter: Air Arms 1998 Mk.2 Pro-Target, 2001 Mk.2 Pro-Sport & 2003 S400C
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