Made to original specifications for rebuilding existing guns or assembling new guns built to factory Government or Commander configurations. Heat-treated, recoil spring plug resists wear and battering. Checkered recoil spring plug gives a traditional look – just like the Colt factory part. Mfg: Ed Brown SPECS: Govt: Steel, blue matte finish. Plug – 1 1/2" (4cm) long, 1/2" (13mm) O.D. Commander: Plug – Steel blue matte finish or Stainless steel, bead blasted silver finish. 1-5/64" (2.7cm) long, 1/2" O.D.