Contains springs that are commonly used or sprung across the room/field.Includes: firing pin retaining pin (x2), extractor spring assembly (x2), detent selector (x2), selector spring / ejector spring (x2), buffer detent (x2), buffer detent spring (x2), detent spring (x4), take down detent (x4) & extractor o-rings (x2)

Model: AR-15 Parts Kit