MCF-A, Short, MLOK Panel, Aluminum, Black

<p>NOTE:</p>

<p>Each package of MCF-A contains one MLOK cover with screws and MLOK nuts installed.</p>

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<p>MCF-A is machined in 6061, with the AA surface (All Angles, or dimpled) pattern we developed for our bolt catch (ABC/R), forward assist (LDFA), ambidextrous magazine release (EMR-A).&nbsp; The AA concept was not developed for aesthetics, but as a versatile surface that offers equal traction from all angles of approach (thus the AA designation).&nbsp; The AA surface can hardly find a better application than hand guard rail covers, where a user&#39;s hand can have multiple angles of approach, and hold the hand guard in different ways.</p>

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<p>The AA pattern on the MCF is made of two dimple sizes and depths, a series of perforations that function both as drain holes and vents,&nbsp; are drilled along its length in the middle row of dimples.&nbsp;</p>

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<p>To be sure, the use of aluminum as hand guard covers is a different approach to solving the problem of handguards heating up during and after firing.&nbsp; While polymer or wood insulates the user&#39;s hands from the warm/hot handguard, MCF-A insulates, and draws and dissipates heat from the handguard.&nbsp;&nbsp;</p>

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<p>These are the testing results:</p>

<p>* With strings of rounds fired, MCF-A heats up more slowly, and cools down much faster than the G10 variant.</p>

<p>* Sitting under direct Texas sun, then brought into 10 to 20 degrees cooler environments, G10 panel performs slightly better, but not appreciably so, with only 2 to 3 degrees of difference between the aluminum and G10 versions after a 5 minutes, and 10 minutes cool down.</p>

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<p>The differences in MCF-A heat dissipation performance between live fire testing and left baking in direct sun light are related to the testing environments:</p>

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<p>1. In live firing, the 3 o&#39;clock and 9 o&#39;clock mounted MCF-As are heated by the radiant heat from the barrel, but majority of the heat rises and is either absorbed by the hand guard&#39;s 12 o&#39;clock rail, or exists from the hand guard&#39;s vents.&nbsp; In these tests, the rifle, hand guard, MCF-A and MCF G10 stayed in the same spot where the temperature didn&#39;t fluctuate.&nbsp; The hand guard, MCF-A and MCF G10 cool at different rates, with MCF-A cooling faster than the hand guard and MCF G10.</p>

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<p>2. In non-firing tests where MCF-A is in 12&#39;clock position, left in direct sun light between 20 to 25 minutes, the rifle, hand guard, then MCF-A and MCF G10&nbsp;are brought into a much cooler environment where the hand guard, MCF-A and MCF G10 all cool down at around the same rate.</p>