Tube extensions for Winchester

The Winchester SX4 and SXP accept tube extensions that increase magazine capacity. On a competition shotgun, capacity before the first reload directly affects how you plan and run stages: more rounds in the tube means more targets before an interruption, fewer moments where your load planning has to account for reloading mid-sequence. For 3-Gun and IPSC Shotgun use, this is one of the most direct modifications available.

The SX4 and SXP have different thread specifications and are not cross-compatible. The number of rounds added depends on extension length and shell length — always confirm on the individual product page before ordering.