My friend, a Glock armorer received this from Glock. Sorry but the chart that was included would not copy to this post.

 

 

GLOCK, Inc.

U.S.A.

 

 

GLOCK, Inc. P.O. Box 369

Smyrna, Georgia 30081 U.S.A.

Fax. (770) 433-8719

 

Tel. (770) 432-1202

 

 

 

Dear GLOCK Armorer:

 

On September 6, 2011, GLOCK Inc. will begin voluntarily exchanging the recoil spring assembly (RSA) on its new Gen4 pistols shipped since 2009 GLOCK’s product development team has modified various elements of the RSA to ensure each pistol’s performance meets the company’s demanding standards. With several variations of the RSA in the market today, GLOCK’s goal with this voluntary exchange is to standardize the RSA to gain the best possible performance in each pistol.

 

Armorers should note that Gen4 G26 and G27 models will not require a modified recoil spring.

 

The new RSA’s all have unique markings on the base of the part. The enclosed chart is designed to help you readily identify the correct RSA for your pistol.

 

Unless a directive is mandated by your agency or your store, the replacement of the Gen4 pistol’s RSA can be performed as part of the regular field-strip process. Agencies or Consumer’s wishing to participate in the exchange program at no charge are urged to call 1-877-745-8523 to order their new RSA.

 

For more information on the details of the exchange program, visit www.TEAMGLOCK.com.

wow even for the 23? I haven't had one issue with mine. I wonder what they changed.