DEVL, LET'S PUT A LITTLE PERSPECTIVE ON THIS.
I TAKE THE TERM "GUARANTEE" RATHER SERIOUSLY.
YOU ASKED IF I WOULD "GUARANTEE" THAT AN UPPER WOULD RUN 100% RELIABLY WITH A FAT BOY.
YOU TOLD ME ZERO ABOUT THE UPPER, ITS CONDITION, THE AMMO OR MAGAZINES BEING USED, ETC.
NO, I WOULD NOT "GUARANTEE" THAT A SINGLE COMPONENT, THE "FAT BOY" GAS TUBE, WOULD MAKE A COMPLETE UPPER OF TOTALLY UNKNOWN ORIGIN WITH TOTALLY UNKNOWN AMMO RUN.
WILL I GUARANTEE THAT A "FAT BOY" WILL WORK? WITH COMPONENTS AND AMMO OF KNOWN QUALITY, YES.
EXAMPLE: TAKE A NEW COLT 11.5" OR 14.5" COMPLETE UPPER. INSTALL A FAT BOY GAS TUBE. WILL I GUARANTEE IT WILL RUN? WITH THE COLT BOLT CARRIER GROUP, DECENT MAGAZINES, AND AMMO OF A KNOWN RELIABILITY, PROPERLY CLEANED AT REGULAR INTERVALS... ABSOLUTELY! AND IT WILL RUN WELL, AT A SIGNIFICANTLY SLOWER CYCLIC RATE THAN WITH THE STOCK GAS TUBE.
ANOTHER EXAMPLE: TAKE A "GUN SHOW" 10.5" UPPER MADE FROM AN M16, COMPLETE WITH A "GUN SHOW" BOLT CARRIER GROUP THAT SERVED TWO TOURS IN VIETNAM. THROW IN A SACK OF COUSIN VINNIE'S SPECIAL RELOADS. BUY THE CHEAPEST MAGAZINES OF UNKNOWN HERITAGE POSSIBLE. WOULD YOU GUARANTEE IT WOULD RUN? WOULD ANYTHING MAKE IT RUN?
WES GRANT
[URL]MSTN.BIZ[/URL]