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“460 Rowland® is a registered trademark of 460 Rowland® Industries. All rights reserved. The use of the term “460 Rowland®” is merely to indicate that this 1911 drop in kit is compatible with the 460 Rowland® ammunition. ShootoutLane.NET  is not affiliated with 460 Rowland® or the 460 Rowland® product line.”
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The Original "460 Rowland Kit"


The original 460 Rowland caliber conversion kit for your 1911 that was invented by Jim Clark, Jr. of Clark Custom Guns in a joint effort with Johnny Rowland in 1998. This kit is warranted, guaranteed and supported by the 1911 experts at Clark Custom Guns, Inc. who have been in business for over 65 years!

Package Contents

  • Clark Stainless Threaded Match Grade Barrel
    • Barrel Length 5 3/8"
    • Thread 575 - 40 tpi
  • 1.5" Compensator
  • Barrel Bushing
  • Bushing Wrench
  • Barrel Link
  • Barrel Link Pin
  • 2 piece full length guide rod kit
  • Recoil Spring Plug
  • 20 lb Recoil Spring
  • 24 lb recoil spring
  • Extra Power Firing Pin Spring

Kit also Includes installation instruction sheet and some reloading data

Detailed list of parts included in the Clark 460 Rowland 1911 Drop In Comp Kit
“460 Rowland® is a registered trademark of 460 Rowland® Industries. All rights reserved. The use of the term “460 Rowland®” is merely to indicate that this 1911 drop in kit is compatible with the 460 Rowland® ammunition. ShootoutLane.NET  is not affiliated with 460 Rowland® or the 460 Rowland® product line.”

What 1911 pistols are considered the
best platform(s) for the Clark 460 Rowland Kit?

The best candidates for this kit are STEEL FRAME, 5" Full Size single stack 1911 Model .45 ACP semi-auto pistol:  
  • Springfield Armory
  • Smith & Wesson
  • Sig Sauer
  • Colt
  • Ruger
  • Para Ordnance (unramped only)
  • Kimber
  • Remington
  • Taurus
Chrome Moly "Blued" steel guns are preferred and generally recommended over Stainless Steel. 

What 1911 pistols are specifically
NOT RECOMMENDED as a platform
for the Clark 460 Rowland Kit?

  • Metro Arms American Classic
  • Armscor
  • Dan Wesson
  • STI Spartan
  • Tisas ZIG
  • IAI (Israeli Arms International)
  • Auto Ordnance
  • Llama
  • AMT
  • Charles Daly
  • Essex
  • Remington Rand
  • Any "GI" 1911 (pre-50s / spot heat treated)

Are there any other 1911 pistols to possibly consider as a platform for the 460 Rowland Kit?

  • Rock Island Armory
  • Wilson Combat
  • Les Baer
  • Custom Caspian (unramped only)

Is "X Brand" 1911 pistol OK to use as a platform for the Clark 460 Rowland Kit?

No. If it's not specifically mentioned here, we cannot recommend it as a safe/reliable platform for this kit.