https://www.hdps.org H&K HK PARTS USC UMP SL8 G36 Block B Rail set Conversion parts and services Wed, 04 Mar 2026 23:03:35 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 https://www.hdps.org/wp-content/uploads/2020/10/cropped-hdps-favicon-32x32.png https://www.hdps.org 32 32 https://www.hdps.org/product/ump-drop-in-auto-sear-delete-dias-d/ Wed, 04 Mar 2026 23:01:51 +0000 https://www.hdps.org/?post_type=product&p=5657 HECKLER AND KOCH UMP LOWER RECEIVER AUTO DIAS DROP IN  DELETE This is a DIY, removing the Auto Sear and ALL models of HK UMP lowers and replacing with this Carbon Fiber block. That alone will free you from any legal worries]]>

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