I have a Haarts on My Colt CT and have no plams to remove it .I keep it a secret just between you, me, and the others who know...They as work good as they advertise...but no where near that of a Comp or Magna Port..but they are removable and can keep yu in the stock group if needed...ROFI
These systems rely on a full-length guide rod made of stainless steel, reamed out and filled with mercury and small steel balls. Upon firing your gun, the balls interrupt flow of the mercury and take advantage of its "anti-bounce" characteristics. The mercury idea originates from the large, cigar-shaped mercury recoil reducers for shotguns, which operate in a similar fashion.
Mercury-Filled Guide Rods are by far our closest competition. They do indeed work, but only to a certain degree. Mercury systems do not eliminate actual recoil, but instead draw it out over an extended period of time, therefore cutting back on your FELT recoil. It has been said that these systems reduce muzzle-flip, but the only factors that could cause this are the extra weight of the mercury and the possibility of the steel balls slamming forward during cycling (if they've floated to the rear prior to firing). Additionally, these systems not only have no reduction of slide-to-frame impact, but they partially RELY on the slide slamming into the frame to send the balls into motion which, in turn, creates the dampening you feel when you fire your handgun. Many reports indicate that these systems make no noticeable difference on guns with short guide rods (baby Glocks, sub-compact Sigs, etc) because there is simply not sufficient room for the steel balls to travel far enough.
On the other hand, the Sprinco Recoil Reducer operates on a simple principle. Utilizing a subspring to slow the slide down during its travel in order to effectively reduce felt AND actual recoil, muzzle flip, and slide-to-frame impact.
Hope this was of some help. If there's anything I can help you with, feel free to give me a shout at toll free 1-800-397-9530.
I would also agree, the Haarts do work as adertised especially the longer ones.
I find that for me they are quite effective at reducing muzzle snap or flip during strings of fire, but I can honestly say that they do not work anywhere near as well as a comp and they do not reduce "felt" recoil for me as I am over 280lbs, wear a size 16 ring and often do not feel recoil from small caliber pistols under .44 Magnum level.
My wife who is also a former Marine is very petite and has commented that she experiences far less recoil in her Haarts equipped Kahr P9 with her chosen Remington Golden Saber 115gr +P+ rounds.
Thank you for that insight into the various systems. I'm not too concerned about recoil, but am always looking for a way to reduce muzzle flip. Can you tell me how the Sprinco system might work on a Springfield Champion? From my own experience with these and other shorter 1911's, changes on the cycling of the slide can have a dramatic impact on reliability of these guns.
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