The B&T GHM9 is a highly modular semiautomatic 9mm pistol.
The GHM9 Gen 2 provides greater flexibility and modularity to the operator. The GHM9 Gen 2 accepts all APC9 PRO lower receivers, and allows the operator to change out barrels, handguards, and stocks.
The GHM9 BT-450002-2-G utilizes the lower designed for glock double stack 9mm magazines. However, other GHM9 lowers can be purchased that utilize B&T or Sig Sauer p320 magazines.