MSR Parts Kits

The Geissele Super Duty Lower Parts Kit includes all the internal parts necessary to complete or rebuild your lower receiver. All key components on this kit are manufactured in-house at our facility in North Wales, PA. Made from proprietary Geissele...

Includes: Qty 1 - Bolt Catch Qty 2 - Bolt Catch & Pivot Pin Clip Qty 1 - Balt Catch Pin Qty 2 - Hammer / Trigger Pin Qty 1 - Bolt Catch / Safety Spring Qty 1 - Safety Qty 1 - Pivot Pin Qty 1 - Bolt Cam Pin Qty 1 - Firing Pin Retainer Pin Qty 1 - Firing...