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Crazy ACOG question

Hammer_Man

Private
Minuteman
Jul 28, 2012
32
12
UT
Will a 3.5x TA11H ACOG work with a 14.5” M4 clone? Trijicon’s website doesn’t list any barrel length specs for the BDC of this model. I’ve had a 4x TA31RCO-M150CP in the past, but I hated the eye relief of that model, so I thought I’d try a 3.5x TA11 this time around. Sorry if this has been discussed already, but my searches found nothing.
 
The Reticle is based off a specific bullet weight out of a specific barrel length. It’s not that it “won’t” work with a 14.5, but it will be off a little. You can shoot groups using the different lines at 100 yards and then measure it to determine how much drop it represents then compare it to a bullet drop chart for your gun/round. If you have a range that’s greater than 100, you can confirm.