WPA Lower Parts Kit for 9mm or .45 receivers - Now includes new bolt catch spring for LRBHO lowers (no tuning required)


Included in this kit is the following:

-Selector Spring

-Takedown Pin Detent Spring

-Pivot Pin Detent Spring

-Buffer Retainer Spring

-Stainless Steel Bolt Catch Spring**

-Disconnector Spring

-Trigger Spring

-Hammer Spring

-Trigger Pin

-Hammer Pin

-Bolt Catch Roll Pin

-Bolt Catch Detent

-Selector Detent

-Takedown Pin Detent

-Pivot Pin Detent

-Pistol Grip

-Pistol Grip Screw

-Pistol Grip Lock Washer

-Pivot Pin

-Takedown Pin

-Buffer Retainer

-Bolt Catch




-Safety Selector


**As of 2/28/2019 this kit includes our new bolt catch spring that is designed for our LE9 lowers and other LRBHO receivers without the need for modification.

AR9 Lower Parts Kit