Allows your bolt to function properly, especially when the weapon gets dirty.

These extra-power extractor springs are constructed from high grade chrome silicon wire for reliable, consistent performance, and extended duty cycle.

Extractor springs are also Cryogenically Processed for greater endurance and consistent performance.

Note: Because this is an Extra Power Spring, use with Stock M16 (Blue) or M4 (Black) Extractor Buffer Inserts (Use of O-Rings or D-Fender® is not required.) We use the Blue Inserts in our LT Uppers.