This product works with KSC/KWA COLT series, and WE1911, MEU, MICOLT series
Prevents the recoil spring from twisting and bouncing, and supports the stable operation. 
Uses engineering plastic buffering for a strong reaction
Comes with a spring guide plug
Use  15mm ring for KSC/KWA COLT series
Use 14mm ~15 mm ring for WE1911, MEU, MICOLT series
 
•EAN & SKU: 8809899600269 , SKU: SG22-WC
•Product Dimension & Weight: 3.95(L)x0.45(W)x0.45(H) inch 1.7 oz
•Package Weight & Dimension:  4.5(L)x 1.5(W) x 1.6(H) inch, 1.84oz
• Made in Korea