Quoted:
The new "Alpha" KMR rails though a tad heavier will be the answer to everyone's complaints about the Magnesium versions..
and about $80 less.
BCM KMR ALPHA-15
"We are grateful for the overwhelming demand for the BCM® KMR and regret that we have not been able to keep up with this demand. The unique and proprietary alloy, with which we own 100% of domestic distribution, is in very short supply and has been the sole reason for sporadic inventory. Recent advancements from the BCM® Product Development Team have enabled the imminent release of several new BCMGUNFIGHTER™ offerings, including additional alloy options for the highly coveted BCM® KMR. This will enable us to raise KMR inventory levels quite a bit over the next 4 months. We are anticipating this inventory situation will be resolved by the end of this year.
The new KMR variants are called "KMR Alpha." The Alpha handguards are all aluminum (no Mg alloy) and weigh slightly more.
Here's the product pages (not searchable on BCM's site):
BCM KMR
Alpha 1.3” Inner Diameter 1.5” OUTSIDE flat to flat
BCM KMR
1.3” Inner Diameter1.5” OUTSIDE flat to flat
KMR Alpha 15 Mounting hardware, 2.2oz, for a total of
10.3oz on a very long 15” rail.
KMR 15 Mounting hardware, 2.2oz, for a total of
8.1oz on a very long 15” rail.
KMR Alpha 13 Mounting hardware, 2.2oz, for a total of
9.9oz on a very long 13” rail.
KMR 13 Mounting hardware, 2.2oz, for a total of
7.7oz on a very long 13” rail.
KMR Alpha 10 Mounting hardware, 2.2oz, for a total of
8.5oz on a 10” rail.
KMR 10 Mounting hardware, 2.2oz, for a total of
6.3oz on a 10” rail.
KMR Alpha Mounting hardware, 2.2oz, for a total of
8.2 oz on a 9" rail.
KMR 9 Mounting hardware, 2.2oz, for a total of
6.0 oz on a 9" rail.
KMR Alpha 7 Mounting hardware, 2.2oz, for a total of
7.4 oz on a 7" rail.
KMR 7 Mounting hardware, 2.2oz, for a total of
5.2 oz on a 7" rail.
Thanks to Plasman & jdavis6576 & TOS