Mk12 (SPR) bipod question

EchoDeltaSierra

Slightly above average
Full Member
Minuteman
Jun 1, 2013
578
350
Minnesota
What length of Harris Swivel bipeds are used on the Mk12 builds; 9-13 or 6-9? Specifically to allow 30 round mag clearance.

Thanks.

- edited mk25 designation to mk12 - due to stupid human error -
 
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