Bravo Company Mfg Extractor Spring Upgrade Kit 3 Pack. The older BCM Extractor springs have a memory effect and with the BCM spring upgrade kit you can have the faster smoother and more durable performance of a BCM extractor spring. As an added bonus both ends of the extractor spring can be replaced with the BCM Extractor Spring Super Cot Adaptor for extra weight and performance. Since the BCM Extractor Spring Super Cot Adaptor fits most older BCM Extractor springs and you can also use it with the BCM Extractor Spring BCM Power Plus and BCM Power Plus HS to add even more life to your BCM Extractor Spring. Specifications for Bravo Company Mfg Extractor Spring Upgrade Kit Pack: Manufacturer: Bravo Company MFG Additional Features: Pack of 3 Condition: New Package Contents: Bravo Company Mfg Extractor Spring Upgrade Kit Pack Bravo Company Mfg BCMEXSPRING3: Extractor Spring Upgrade Kit 3 Pack