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Derr Precision


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Derr Precision
Average rating:  
 32 reviews
 by Robert Weaver
Springfield 1911

Greg built me a beautiful Springfield 1911. His attention to detail and his customer service is second to none! Greg among others things added a bobbed beaver tail, checkered the front strap, high cut the front strap, beveled the mag well, a fantastic trigger job, re-blued the bottom end so that it matched the top end perfecrly, and installed a new rear sight. The turn around was terrific and the price was very fair. Thank you sir you did an amazing job for me and I will not hesitate to send you more work as well as recommend you to others!

 by Bob
Springfield 1911

Greg did an incredible job on my older Springfield 1911.
I have ended up with a beautiful 1911, Greg's attention and customer service is unbelievable. He did trigger work, a compact beavertail, new rear sight, checkered front strap, Hi cut front strap, beveled mag well, and a reblued bottom end that perfectly matches the upper beautiful job overall.
Thank you very much Sir

 by Bob Weaver
Incredible Springfield

Greg did some work for me on an older Springfield 1911,and I could not be any happier!

He checkered the front strap, added a checkered m/s housing, beveled the mag well, did a trigger job with light weight trigger, added a shortened beavertail and added a retro rear sight. Also reblude bottom end and perfectly matched the slide.
I almost forgot, he added a standard Colt thumb safety, and high cut the grip frame.


Thank you sir.

 by Brian
Ruger SR1911

My 1st experience w/ Greg - he checkered the front strap on my Ruger1911 and improved the trigger and the result is impressive. So much confidence in him that I have asked him to do a custom build on a Colt Series 70. Good combo of a gunsmith artist who wants to create an exceptional pistol while trying to fulfill your wishes.

 by J havers
Colt build

Greg Derr did a Colt for me. Top notch customer service and top shelf . Trust Greg Derr with all your gunsmithing needs. Greg is the best in every way possible. The best in the country and a true artist & gifted craftsman. Greg answered all my questions & emails promptly and delivered a masterpiece in art.

 by TH
Outstanding Pistolsmith

Over the past three years, Greg has restored and modified several 1911s for me. His advice and execution on each project have been outstanding. I have worked with many gunsmiths and I can honestly say that none have matched his skill, attention to detail and professionalism. Thank you, Greg.

 by Chuck Steinhauser
Pardini SP

Thanks, Greg. Great pistol! Your advice, recommendations, and workmanship were spot-on. I sincerely appreciated all your help. Two thumbs-up recommendations from me!

 by Mike
Custom Colt 1911 Comp Gun

Greg just completed another custom build for me. This was the 6th custom build that Greg has done for me in addition to countless other stock pistol modifications and upgrades. This one was a custom Colt 1911 gun with a custom compensator on it. It was a very unique build and I couldn't be more thrilled with how it turned out. It surpassed all of my expectations. Just the amount of speciality parts and custom tooling and cuts that were required to execute this gun were unbelievable. Not only did Greg pull that all off but the fit and finish are flawless and impeccable. In addition, all of the one off customer features are just phenomenal. Greg simply builds the absolute best custom 1911's that you could purchase anywhere. For a custom 1911 build or just general gunsmith work, Greg is definitely your guy. Greg is the only person that I will have do any work on my guns. Thanks again.

 by Mike G

Greg designed and built for me a custom 1911 45ACP Long Slide. The fit, finish and most importantly function are all unbelievable. I let Greg have free reign on the entire build and couldn't be more thrilled. All of the little details he added are phenomenal, such as the flat top and serrations and the French cut. The pistol is a dream to shoot and more accurate than I am. This is the 6th custom build Greg has done for me with 2 more already in the works. On top of the custom builds, Greg has worked multiple other firearms for me and his work and attention to detail is always second to none. I have owned some very high end guns and the custom pistols from Greg are far and above the best. If you are looking for a custom 1911 or just a fantastic gunsmith, look no further. Thanks again, Greg.

 by Bill M
Awesome job on my colt Gov model

Greg was a pleasure to work with. Very knowledgeable and fair. Exceeded all my expectations. Not only beautiful but shoots great too!!!! Thanh you

 by Nick
Another great M&P Trigger Job

I just recently picked up a 9C with a stock trigger. This is the 3rd M&P I've brought to Greg and once again he did not disappoint. he took a marginally usable trigger and turned it into a tack driver. Nice short take up , no grit , shorter reset. Awesome job
thanks again Greg !! you're 3 for 3 with me now 🙂

 by Tim Cunningham

Just want to say thank you.
Love my Pardini SP .

 by Ruben Zamora
Delta Elite Project

This gun was my first ever Custom Job. I just got the gun in my hands today and am amazed on the quality of work, fit and finish performed on this gun. I would highly recommend Greg to anyone wanting a highly professional job done to their pistol. Communication was very prompt and pictures and updates on the build helped with the wait.

 by Nick Poulakis
Wow like night and day

Greg has done 2 trigger jobs for me now. Both M&P's a full size .40 and just this past week my Shield 9mm. All I can say is .............WOW!
It's amazing how much easier it is to control these now and consistently shoot accurately. My groupings have drastically improved since I had Greg do the triggers on these. I was actually on the fence about even keeping the shield, but now she is a keeper for sure.
thanks again Greg

 by Mike G
Unbelievable Colt 1911 Lightweight

Greg just completed another build for me. This build was a 1960's Colt 1911 Lightweight Commander in 9mm. I gave Greg free reign on this build and what he came up with far exceeded both my expectations and anything that I would have been able to come up with on my own. Not only are the craftsmanship and quality are phenomenal but also the pistol shoots like a dream. This was the fourth custom build that Greg has done for me. In addition, he has worked on numerous other firearms for me. The quality of his work is always outstanding. If you are looking for an A+ gunsmith, Greg is your guy and if you are looking for a custom 1911, Greg is without a doubt one of the best custom 1911 builders that you will find anywhere.

 by Nick W
Derr Precision

I've just received the second of two Colt 1911s from Derr Precision, a S70 Government Model and a now a pre-series 80 Combat Commander. Brother's in Arms! Greg's work and attention to detail is outstanding! I've carried and qualified with (I'm an LEO) the Government Model for over a year now and it has been flawless! Just received the Commander and the fit and finish is fantastic. I highly recommend Derr Precision for your next 1911 build.

 by Larry M

Hi Greg,

Just wanted to let you know that the Toz arrived on Monday and that I took it to the range today, Everything worked just fine. Thanks Greg, you are the best.


 by Mark D

I just want to let you know what an OUTSTANDING job you did on my disconnector slide modification for my 1911 and to thank you for such a fast turn around time!! It was a pleasure to deal with someone that delivers such great customer service as you. I will be recommending you to all of my shooting friends and family!

Thank you again.

 by Mike G
Awesome Craftsmanship

Greg has built a number of custom 1911's for me, as well as, has done custom work for me on other 1911's and pistols. Not only are his custom 1911's like works of art but the fit and function are phenomenal. His workmanship and quality are unmatched. He is the best gunsmith that I have ever dealt with. If you are looking for a custom 1911 or need any pistol work, Greg is the person you need to contact.

Thanks again Greg for the most recent custom Colt 1911.

 by Mike
Phenomenal Work

Greg just completed a 1911 custom build for me and he is working on a couple other projects for me. The 1911 exceeded my expectations and turned out phenomenal. Greg also did a special 1911 for my dad and he could not have been more thrilled with it. His work is always 1st rate and craftmanship is the best. If you need any pistol work done, I would strongly recommend Greg.

 by Richard R
You worked your magic

Sorry for taking so long to comment back about the work you performed on my gun. As usual it is fabulous. You worked your magic on the 10mm and the 357sig is unbelievable. Thanks for your efforts and I am really proud to attach your name to the dependability of the gun.

 by Eric
Excellent Craftsmanship


I've been prevented from sitting down to write you the email that this masterpiece truly deserves. It's immaculate. I've truly never handled a firearm with such excellent craftsmanship. I hope that perhaps in the future, lightning will strike twice, and I will have another opportunity to have you build something equally incredible.



 by Leo Greski
Excellent Performance!

Picked up my 1911 and in one word, WOW! it feels and looks great! Thanks for the unexpected upgrades with new Cerakote! The blending on the mag. well is awesome!! The trigger is crisp and very little creep and sight replacement work is golden. Not only a true upgrade to performance but a great display of craftsmanship!

 by Mark K

I had a chance to shoot the pistol this morning. It functioned perfectly and the trigger is EXACTLY as I wanted it. It not only functions great but looks great tool- the fit and finish is outstanding. This project turned out even better than I had hoped. What a wonderful job you did on it.

Thanks again. For the great work and effort you put into this, it is greatly appreciated.

 by John I
I love the colt

Hi Greg: I wanted to let you know that I shot the 2014 S&W IDPA Indoor Nationals with the Colt New 70 Series you customized for me. I took third place in my division. The gun was just great. Perfect reliability and handling. The accurizing really made a difference. It is incredibly accurate. I was the most accurate in my division and one division above! Fitting it to my hand makes the gun just easier to shoot. I am sure it helps accuracy too by allowing for a better grip.

I love the Colt. Looking forward to talking to you about the next one!

 by Ross
Greg is your guy!

Greg Derr has well earned reputation for creating unique high-end, functional, handmade, custom “works-of-art” that shoot even better than they look. And they look amazing! I retained Greg to help build a truly custom, Damascus Caspian 1911. I couldn’t be happier with the end result and the final product is a testament to his attention to detail, careful selected materials, and high end instinctive build choice that truly places Greg’s work in a class of its own. Whether you need a little something tweaked in your range gun, or are building a cherished family heirloom to be passed down for generations you can trust that Greg is your guy!

 by Christopher

I took my Colt Series 70 to Greg to turn into a custom show piece of my collection. Greg took the time to listen to what I looking and also provided some awesome ideas of his own and was extremely meticulous with his custom design touches which made the gun look great but most importantly shoot like a match pistol. I would recommend Greg to anyone who looking to have sharp, clean and functional custom work done to there 1911 or any gun for that matter.

 by Zack
A work of art.

It's pretty clear that you don't just build guns, but make functional works of art. I've ran my pistol through a couple matches, but it's almost too nice to beat up on. It's exactly what I was looking for. I plan to hand it down to my children and grandchildren, not just as a working pistol or a family artifact, but as both.

Probably most importantly, you don't just know your trade, but you also stand behind your work like a true craftsman. That's very hard to find in any business, and one of the largest factors is why I'm a fan.

 by Ralph
Highly Recommend

I wanted to finally get a nice custom 1911 and looked around at the local options. I chose Greg Derr based on personal recommendations and getting to meet him and understand his methods. He guided me through the process, helped me make my choices and ended up building a beautiful firearm. I'm no high end shooter, but I enjoy my 1911 and it gets a lot of attention when I bring it out at the range. Greg also did some nice trigger work on a couple of other firearms that I own. I highly recommend Greg, he is a master craftsman and a nice guy to boot.

 by Tom S
Looks and shoots great!

My rebuild looks and shoots great! It went from a nondescript 1911 to an updated and very cool looking range gun. I will never shoot competitively but I will enjoy the new gun for a lot of years.

 by Ken C
More than I expected

I have bought three 1911's from Greg. 1 Colt and two Caspian customs. I was so pleased with the first custom that we went all out on the second with a Damascus slide, trigger and hammer on a titanium receiver. Very unique, beautiful, shoots well and has a custom serial number. Greg combines accuracy, art and gun smithing to give his customers more than they expected.

Ken Conway

 by Bob C
Fine Craftmanship

Fine craftsmanship. Greg stands by his work. I will definitely have him build a second pistol for me.