The SIG SAUER P320 LTXG Full-Size Grip Module is an OEM X-Series upgrade that converts your P320 fire control unit into a heavier, competition-oriented Full-Size/X5 platform. Molded from SIG’s tungsten-infused TXG polymer and finished with laser-engraved texture, the module adds substantial internal mass to tame perceived recoil while the aggressive laser-stipple improves purchase under rapid strings. Built in a medium circumference with X5 ergonomics (deeper undercuts, extended beavertail and higher backstrap), the LTXG accepts full-size slides in 9mm, .40 S& W or .357 SIG, offers a reversible mag release, and is compatible with removable grip weights and magwells — providing an OEM path to a steadier, more controllable P320 without replacing your FCU. Sig Sauer P365 Low Cap Grip Module Assy P320 LTXG 9/40/357 Full-Size Medium Gry X-Change Kit 8901005