Originally Posted by
YCPDK9
Looking at building up a .45 upper. Does anyone know if a hammer change is necessary when running a .45 Oly Arms upper (its 130 am and they are closed) and any info on optimal barrel length would be appreciated. HD loads will be Speer Gold Dot 230gr. Anyone's experience/ input please.
My boss owns one, and I've worked on it before. IIRC it uses a standard AR hammer. I'll double check to be sure. He SBR'd his and had it cut to 10.5" and has a .458 SOCOM Vortex flash hider on it.
Chief Armorer for Elite Shooting Sports in Manassas VA
Chief Armorer for Corp Arms (FFL 07-08/SOT 02)
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