This fantastic new extension for the Glock 43 is a must have for anyone looking to add both capacity and grip length to their firearm! Features: +4 Round Capacity (for a total of 10 rounds in the magazine!) Additional length and contoured finger indents for a full, firm grip. Fiberglass reinforced polymer construction. Please note: This product is not compatible with the frame insert (sku: 2157) Please note: Does not fit the Glock 43X or 48.