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Rock River Arms 9mm AR15 Magwell Conversion Block
Rock River Arms
9MM0115
New product
Rock River Arms 9mm AR15 Magwell Conversion Block
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Rock River Arms 9mm Magwell Conversion Block
Turn your standard AR15 lower into a 9mm lower!
To convert your standard AR15 (5.56/2.23/300 BLK) lower into a 9mm lower that uses Colt style mags, just insert this magwell conversion block, and change the buffer to a 9mm buffer. 9mm buffer sold separately -- see "accessories" below.