Wilson Combat AR Spring Buffer Carbine AR10. Its 37-coil design offers superior linear compression reducing stacking and increasing reliability. Whether you're taking on a competition or just want to enjoy some recreational shooting this spring makes sure that your performance is as consistent as possible. Not only is it made from a durable chrome silicon material but its flat wire design increases tensile and compression strength. As a result you can expect the spring to last longer than conventional springs. With its superior design and construction this Wilson Combat buffer tube spring is an essential upgrade for your AR-15. Get ready to take your rifle's performance to the next level Specifications for Wilson Combat AR Spring Buffer: Manufacturer: Wilson Combat Gun Model: AR-10 Condition: New Package Contents: Wilson Combat AR Spring Buffer What firearm models does the manufacturer say Wilson Combat AR Spring Buffer is compatible with? The manufacturer suggests that Wilson Combat AR Spring Buffer is compatible with AR-10Wilson Combat TR-BS10A-AR10: AR Spring Buffer Carbine AR10