KNOWLEDGE IS FLEETING, BUT "THE GOUGE" IS ETERNAL.

HERE'S THE GOUGE:

THE KAC M4 AND M5 RAS FOREND ASSEMBLIES ARE DESIGNED TO FIT GOV'T PROFILE BARRELS WHICH ARE 0.835" - 0.855" DIAMETER JUST AFT OF THE FRONT SIGHT TOWER.

IN MY EXPERIENCE, THIS ELIMINATES COLT HBAR 16" BARRELS. TOO BIG. THEY SHOULD BE FITTED WITH THE KAC M4 RIS.

HOWEVER, BUSHMASTER HEAVY BARRELS DO SEEM TO WORK WITH THE KAC M4 RAS.

I'VE ONLY USED THE KAC M5 RAS ON A2 PROFILE 20" BARRELS, FOR WHICH IT WAS DESIGNED.

WES GRANT
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