Chiappa's RAK-9/PAK-9 interchangeable magazine adapters are constructed of polymer and are compatible with Glock G17 Gen 3&4 mags. Fits Chiappa PAK-9 and RAK-9 Rilfe and Charles Daly PAK-9. RAK-9 requires additional adaptor plate for use (sold separately) - Total Length: 10.5'' (266 mm) - Net Weight: 0.032