HF-601 is a collaboration between Hodge Defense Systems and Forward Controls Design.
HF-601 is based on the
FCD PF-040 pins, with Jim’s input on what he wants on HDSI ARs. Like PF-040, they’re 17-4 stainless steel, precision billet machined on Swiss machines with high degrees of precision and very tight tolerances, and black nitride treated. HF-601 pins are 0.040″ longer than TDP take down and pivot pins, another feature shared with the FCD PF-040.
Jim has a soft spot for Colt 601, thus HF-601 pins have taken on many of the Colt 601 pivot and take down pin cues. The dimples on both sides of the take down pin and left side of the pivot pin, even the slight rim on the left side of the take down pin tip is faithfully reproduced. The only exception is the pivot pin, whereas on the Colt 601, the right side pin head is flat, it is flat on the HF-601.
HF-601 pins diameter adheres to TDP dimensions and tolerances, 0.2485 +0.000/-0.005.
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Mike (verified owner) –
Necessary? Probably not. However they are very well made and eliminate any stickiness etc that cheaper and not finely crafted pins often have. Excellent quality of life improvement. As a bonus they have the center dimple so they work well as a “quasi clone” application trying to replicate early colt m16/m16a1 style setups.
nathanial.wilson77 (verified owner) –
Excellent pins, fit and finish are as expected from fcd and hodge!
August Hager (verified owner) –
Def top pin choice!
LL99 (verified owner) –
Well made and look great. A must have for any Hodge build.
Jo Vanover (verified owner) –
FCD parts are among the best for good reason.