These things along with the safety, trigger, magazine extension nut, and cocking indicator are all anodized for use resistance also to include a little flash to the overall package. At the center from the 940 JM Pro is really a resilient aluminum receiver with a grooved top that's been drilled https://zanderqhwkz.humor-blog.com/28518298/5-tips-about-mossberg-940-for-sale-you-can-use-today