A surgical instrument can be provided as described herein. The surgical instrument can include a handle with first and second handle portions. One of the first and second housing portions can include a proximal latch and a proximal latch pin. The proximal latch and proximal latch pin can be configured to lock the first and second housing portions together at proximal ends thereof. One of the first and second housing portions can further include a latch projection, a clamp arm, an over center linkage where the latch projection and over center linkage can be configured to lock the surgical instrument in a closed position when the clamp arm is engaged or in an engaged position.