I HAVE FRIEND WHO HAS A WIN SX3 SEMI 3-1/2 WITH A SLIGHT BULGE NEAR THE END OF THE BARRELL IE 4-5 INCHES. I WAS WONDERING IF YOU GUYS THINK HE COULD PUT A SXP BARRELL ON IT, ESSENTIALLY SWAPPING THE BARRELL FOR SAFETY REASONS? SAME BORE DIAMETER ETC. THIS MAY SOUND LIKE AN ODD QUESTION/ STUPID QUESTION BUT HEY HE NEEDS SOME HELP AND I DIDNT KNOW?