Tubb Precision AR-15 CS mag spring - 40 Round
"The magazine is every bit a part of the rifle, as much as a barrel or bolt, but it's also one of the most vexing components to correct when it goes bad. This Tubb Precision CS magazine spring goes a long way towards perfecting AR-15 magazine function."
Your magazine IS a spring! After hearing, and experiencing, numerous magazine failures in these rifles, we decided to produce a better spring. Especially troublesome are current production magazines, which frequently exhibit inferior components. The problem is rarely in the "box" and is most often in the spring. Our Chrome Silicon spring represents the ultimate in part upgrades.
The Tubb Precision CS AR-15 Magazine Spring provides positive pre-load against the follower. As with our other CS springs, it has enhanced mechanical properties which produce faster rebound. Consistent, constant tension is the key. Plus, there is less drag against the side walls for freer movement. These attributes are of utmost importance to the High Power competitor who is frequently relying on bolt stop engagement on an empty magazine and also positive feeding from "underloaded" magazines.
The Tubb Precision CS magazine spring is also angled correctly to locate the follower in its optimum orientation. This design modification alone fixes a majority of feeding problems. Another advantage of this spring is faster, more positive bolt stop engagement, saving wear on the part and also ensuring its correct function.
As with all Tubb Precision CS springs, the superior chrome silicon material will last well beyond the lifetime of any magazine. Available in single sets or packs of three. These parts fit any "40-round" size AR-15 magazine box.
Springs for 20 and 40-round capacity magazines are also available.
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