JP Enterprises EnhancedBolt Bolt Carrier Group, 9mm, Polished SS Finish, Standard Stroke Enhanced SCS System - 2 Tungsten/ 3 Steel Masses, Silver - $387.99 (Free S/H over $49 + Get 2% back from your order in OP Bucks)

Description

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Enhanced 9mm AR Bolt, combined with a Silent Captured Spring System.New to this revision of our JPBC-9SL and JPBC-9SL-SP bolt assemblies is last round holt open compatibility with our line of short-stroke Silent Captured Springs. This bolt assembly will provide reliable last-round lockback with any compatible receiver such as our GMR-15.
Specifications for JP Enterprises EnhancedBolt 9mm AR Bolt Carrier Group Kit - JP Standard Silent Capture Spring:
Fabric/Material: 416R Stainless Steel
Caliber: 9mm Luger
Included Accessories: 3 x Steel Masses, 2 x Tungsten Masses
J5-ABA-EB9KITST-JPBC-9SL-SP5H2
UPC#: 812872025612