RCU Forums - View Single Post - don't know what to get!

04-24-2011, 12:58 PM

#17

carrellh

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RE: don't know what to get!

The .51 fits the same mount as a 40 or 46. Even the OS-55AX will fit but is is expensive and much more power than a trainer needs. The .40 to .55 are all considered to be in the '40 size' group.

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