David Tubb CS SR25/AR10 Magazine Springs

[imschur]

Anyone try these?

Heres the info from his site

CS SR25/AR10 Magazine Springs

After hearing, and experiencing, numerous magazine failures in magazines for these rifles, we decided to produce a better spring.

The problem is rarely in the magazine box and is most often in the follower spring, and frequently both. Our CS [chrome silicon] spring represents the ultimate in magazine upgrades. It solves virtually all magazine-related function problems, for good.

The CS SR-25/AR-10 Magazine Spring provides positive pre-load against the follower. Consistent, constant tension is the key. As with other CS springs, it has extra power (+10-percent) and faster rebound. Plus,there is less drag against the magazine side walls for freer movement.These attributes are of utmost importance to the NRA High Power competitor who is frequently relying on bolt stop engagement on an empty magazine and also positive feeding from underloaded magazines.

Our CS spring is 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 CS springs, the superior chrome silicon material will perform its job perfectly well beyond the life of any magazine. This spring length fits all magazine configurations available for the SR-25, AR-10, DPMS .308 LR, M1A/M14, and others. This spring also works with TUBB 2000 magazines. Please note that our "20-round"designation does not necessarily refer to the actual round capacity of the magazine. Our 20-round spring fits any size magazine box, including those blocked or manufactured to 5, 8, or 10 round capacities. DOWNLOAD brochure for trimming instructions.