We love Sprinco Springs, they're our go to for high quality and dependable buffer springs. When we learned of its M4/M16 Extractor upgrade kit, we had to have them for our test guns that have seen lots of mag dumps and abuse, and we want to offer it to our customers as well.
Sprinco Tactical Springs M16 / M4 / AR-15 / CAR-15 Extractor Upgrade single kit includes 1 Each: Extra Power 5-Coil Extractor Spring, Mil-Spec Black Extractor Insert, Mil-Spec Viton O-Rings
