YouTube video: https://youtu.be/3G6mv1CyW8E
The AR I used for the 8K Run and Gun was my own build. It was originally built for 2 Gun and 3 Gun matches. My main focus for this rifle was reliability and light weight. The rifle overall weighed with the scope is 7.5 lbs. In comparison to my first build with standard mil spec AeroPrecision parts was 9+ lbs. Ounces adds up to pounds so 1.5 lbs lighter makes a difference when trail running with gear and water for 5+ miles. Most of the weigh was shaved from the following light weight parts: hand guard, barrel, and bcg (bolt carrier group). The rifle performed well after maneuvering through the obstacles.
I was pleased with the Primary Arms scope and it's performance. The ACSS BDC reticle made quick acquisition for 100-200 yards targets. For targets between 300-400 yard targets, (see reticle below) it was a little more difficult since there were no hash marks for those ranges. I may have to check on some other scopes with other reticles. The Elftmann 3Gun trigger was reliable and performed well. It is a single stage trigger with a quick reset more suited for short range shooting. It has an adjustable trigger pull from 2.75 - 4 lbs. For my next race, I would like to try a 2 stage trigger to help with the longer distance targets (400 -500 yards). I am looking into the Geissele triggers.
Overall the race was a great testing ground for the rifle. Whether you decide to build your own rifle or a build one, train with it as much as you can to know its capabilities and limitations. Training in different shooting positions, weather conditions, and a timer will help prepare for this event.
Send me a comment on any questions or recommendations.
Here is the main parts of my rifle. Mostly shopped between Optics Planet and Primary Arms waiting for the sales and discounts.
Upper & Lower Receiver: M4E1 Threaded Receiver Set - FDE Cerakote
https://www.aeroprecisionusa.com/m4e1-threaded-receiver-set-fde
Handguard: Aero Precision 15" ATLAS S-ONE KeyMod Handguard - FDE Cerakote
https://www.primaryarms.com/aero-precision-15-atlas-s-one-keymod-rail-fde-apra500015a
Barrel: Odin Works .223 Wylde Barrel 1:8 Mid-Length UltraLite - 16.1"
https://www.primaryarms.com/odin-works-16-223-wylde-18-ss-barrel-mid-length-gas-block-included-b-223-16-ul-ml-tg
Scope: Primary Arms 1-8X24mm SFP Rifle Scope - Illuminated ACSS 5.56 / 5.45 / .308 Reticle
https://www.primaryarms.com/primary-arms-1-8x-rifle-scope-illuminated-acss-reticle
Mount: Warne Scope Mounts Gen 2 Extended Skeletonized 30mm MSR Mount - Dark Earth
https://www.primaryarms.com/warne-gen-2-extended-skeletonized-30mm-mount-xskel30de
Trigger: Elftmann AR-15 Match Trigger Curved Mil-Spec .154"
https://www.primaryarms.com/elftmann-ar-15-match-trigger-curved-mil-spec-.154in
Stock: Lancer Systems Carbon Fiber Stock - A2 Length
https://www.primaryarms.com/lancer-systems-carbon-fiber-rifle-stock-lcs-a2-r
BCG: Light Weight AIM AR .223/5.56 NiB 9310 MPI Bolt Carrier Group
https://www.aimsurplus.com/product.aspx?item=XAIMBCGNIBLW&name=Light+Weight+AIM+AR+.223%2f5.56+NiB+9310+MPI+Bolt+Carrier+Group&groupid=6981
Buffer: KynShot Hydraulic Recoil Buffer AR-15 w/ Fixed Stock
https://www.nokick.com/KynShot_Hydraulic_Recoil_Buffer_AR15_Fixed_Stock_p/kyn-rb5001.htm
Charging Handle: Radian Raptor Ambidextrous Charging Handle
https://sunnystateoutdoors.com/collections/20-off-sitewide-christmas-deals-use-code-cm20/products/axts-raptor-ambidextrous-charging-handle?variant=38879119692
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