RA Tech makes a number of high-quality airsoft parts, including an extensive catalogue of upgrade and option parts for the KWA LM4. This is an upgrade part composed of steel and will replace LM4 Part 16 without any tooling or fuss, as well as adding on to the longevity of your replica.
RA Tech New Gen Steel LM4 Bolt Stop Features:
-Precision Fit and Finish
-Guaranteed KWA LM4 Compatibility