Sinclair bore guide for GAP-10

[longrangefool]

Anybody know which model bore guide from Sinclair fits the GAP-10? My GAP-10 is being chambered in .260 Remington so I'm assuming the standard .308 models should work fine.
From what I can see, one of these should be the right one (sorry, I cant figure out how to link to each one directly, they are both listed here):

• 749-003-621WS - Sinclair AR-308 Rod Guide, 308 Win
• 749-011-344WS - Sinclair AR-10 Rod Guide Rock River 308 Win

Thanks ahead of time.