Springfield Armory Echelon Compensator - 9mm, RH, 1/2 x 28

3 model listings

• Springfield Armory Echelon 4.0FCManufacturer documentedRequires a THREADED BARREL in 1/2-28. Most of these pistols do not ship with one — check your barrel before buying. Product (read 2026-09-22): "Springfield Armory Echelon Compensator - 9mm, RH, 1/2 x 28". The page sells a compact recoil kit and a full-size recoil kit for use with the comp. Those are the 4.0" compact and 4.5" full-size cards, plus 4.0FC, which is the 4.0" gun on the full-size grip. Comp and Alpha are not named. Bar-Sto barrels are called out as non-standard at the muzzle.
• Springfield Armory Echelon 4.0CManufacturer documentedRequires a THREADED BARREL in 1/2-28. Most of these pistols do not ship with one — check your barrel before buying. Product (read 2026-09-22): "Springfield Armory Echelon Compensator - 9mm, RH, 1/2 x 28". The page sells a compact recoil kit and a full-size recoil kit for use with the comp. Those are the 4.0" compact and 4.5" full-size cards, plus 4.0FC, which is the 4.0" gun on the full-size grip. Comp and Alpha are not named. Bar-Sto barrels are called out as non-standard at the muzzle.
• Springfield Armory Echelon 4.5FManufacturer documentedRequires a THREADED BARREL in 1/2-28. Most of these pistols do not ship with one — check your barrel before buying. Product (read 2026-09-22): "Springfield Armory Echelon Compensator - 9mm, RH, 1/2 x 28". The page sells a compact recoil kit and a full-size recoil kit for use with the comp. Those are the 4.0" compact and 4.5" full-size cards, plus 4.0FC, which is the 4.0" gun on the full-size grip. Comp and Alpha are not named. Bar-Sto barrels are called out as non-standard at the muzzle.