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"From a custom gunmaker's perspective I always appreciated the manner in which he presents, not only my work, but every gun he is commissioned to sell. Mark has a well-deserved reputation for being dutiful and honest in his transactions."
Jason Burton, Heirloom Precision
Manufacturer: Colt
Caliber: .45 ACP
Model/Size: Officer ACP
Finish: Blued Slide/Cerakoted Frame
Condition: Pre-Owned
Box/Papers: Yes
Accepting SEALED bids starting at $8,000. If you want to submit a bid please use the Inquire button below by 08:00 PM CST on 11/7/2026 after which the winning bidder will be notified. To the end of avoiding ties, please make your bid an odd number, e.g. $8,001.45.
This pistol came from Ned Christiansen with a very detailed and descriptive narrative of the build which I am transcribing verbatim here:
For the person who strongly prefers to carry a 1911 in .45ACP, this Colt Lightweight Officer's ACP would be the ultimate in terms of compactness and weight.
Gov't Model loaded with eight 230-grainers: 44 oz
This LW OACP with seven 185's, my preference as a carrier of my own OACP since 1985: 32 Oz
So, 12 OZ difference. 3/4 of a pound. Doesn't sound like much but imagine carrying six I-ounce 12 gage slugs in each front pocket. 3/4 of a pound is noticeable.
This is a gun I originally gave a light customizing to in 2005, for a door-kicking, butt-kicking Chicago-area cop friend. The theme then was to improve ergos and sights, and keep it affordable, so it got my Conamyds front and back, a beavertail, and some reliability work. Four years ago, we started discussing taking it to the next level. He had me go ahead with this work, making it now a true custom 1911. This friend was injured on the job and now needs to sell it.
In the second round of work, I installed my Extra Stout Plunger Tube (with four, not two attachment posts), and my Shield Driver rear sight (made from a piece of 155mm Paladin howitzer barrel.) I fitted a second extractor, and a new Wilson Combat barrel. The gun shoots marvelously with the new barrel: in test firing I managed a one-hole ragged five-shot group at 15 yards. The barrel and bushing, hammer and hammer strut, guide rod and recoil spring plug have been given a chrome-and nickel-bearing tungsten PVD coating. A new flat wire spring is installed. The slide is beautifully blued by Glenrock Blue with polished sides and matte rounds. The Shield Driver rear sight and dovetailed front both have fresh 2026 tritium lamps. Tritium lamps are installed sub-flush so they are visible only to the shooter. The rest of the gun has been re-Cerakoted in black by Glenrock.
The double-diamond checkered wood thin grips are the ones that have been on it all these years. I know that sometimes a person wants to pick their own, so I left them on rather than put my best guess for new ones on. They will also give an idea of the amount of use this gun has had over these last two decades—not much (due to a department policy change for off-duty carry). We estimate the total round count at under 400 rounds, maybe under 200. Other details—it has the short factory trigger, lightened, welded and refitted to remove play, with a solid overtravel stop added. It has the Series 80 passive firing pin safety, a plus in my book, The trigger pull is 4 1/2 pounds. Factory safety, tuned to have perfect efforts with no bounce-back. Factory hammer (lightened and optimized). The beavertail, added in 2005, is a Springfield part—for a reason. It is a steel MIM'd part; we picked it because they are cored out and therefore nice and light. The mainspring housing is an aluminum one from VZ Grips. The magwell is nicely beveled.
Officer's ACPs are typically rattly in the slide to frame fit. One feature that helps make this gun special, is that this rattle has been taken out in a custom touch that I believe has not been seen before. A "frame weld-up and refit" is common, but welding up an aluminum alloy frame is not done. On this OACP I have had the slide rails laser-welded, then I re-machined and fitted them to the frame. There is nothing tight or draggy about this fit, it is free-moving but rattle-free and smooth. Accu-Rails would have been an option here and they are great, but this weld-up gets the same result without extra parts that can be broken or lost. In the laser welding process, the slide never even got too hot to touch; there is no metallurgical downside.
Another feature is my unique steel feed-ramp insert. It is installed in such a way that it can never shift or come loose, as opposed to being held in with a set screw. This removes any question about the feed-ramp being aluminum and not holding up.
What to expect: the frame left the factory anodized black. That is of course gone in several areas with the custom metalwork having been done. There is no evidence of this with the Cerakote having been expertly applied by Glenrock Blue. Black anodizing on the frame rails will show silver patches pretty quicky on these guns. On this gun, the factory anodizing of the rails has not been removed; the rails have a very light coat of Cerakote on them, but will show some silver areas after minimal handling. However, with the fit between frame and slide having been optimized, having lots of bearing area between them, I expect the fit to last the life of the gun. Also expect great reliability, as I found in test firing various current self-defense loads.
It comes with four magazines: two Colt 6-rounders, a NIB Tripp, and a Wilson Combat 7-rounder.
This gun is meant as a gentleman's daily carry gun and I think it fills that role perfectly. Shoot it, get to know it, become confident in it and competent with it, but I don't think any aluminum framed pistol is a 100,000-round gun. I suggest that in anything shorter than a 5" Government Model, you will be better served and more effective with ammo that is not +P. The smaller guns have a shorter slide stroke giving a smaller window of operation, besides which, they naturally recoil a little harder. For the best shootability, I suggest 185's that are on the milder side—it's a .45, you don't need the hottest round you can find. Hotter rounds will be extra loud, extra flashy, and have recoil detrimental to fast shooting.
Ned F. Christiansen
Ships FedEx 2nd Day inside a gun rug, with 4 mags, spare extractor, provenance and original factory Colt box.
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