The KWA 1911 Mainspring Housing from the Mk1 is a standard mainspring housing, and includes the hammer spring and retention. Part 178 fits all the Mk series PTP M1911 gas blowback pistols.
KWA 1911 Mk PTP Slide Release Lever Plunger Part 178 Features:
-Precision Fit and Finish
-Straight Mainspring, Textured Grip
-Guaranteed KWA Compatibility
KWA OEM Repair Parts are specifically designed for precision fit and finish in KWA GBB pistols and magazines. Keep your pistol performing like the day you bought it with KWA OEM parts