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HEXMAG .223 /5.56mm AR15 10/20 Magblock
New Hexmag AR-15 Magblock 10/20 Magblock
- Magblock 10/20 MCL block for use in polymer Hexmag AR-15 magazines.
- This block will convert a 20 round magazine to hold only 10 rounds.
- Uses the original Hexmag locking plates.
$6.50 As low as: $5.95