McAfee SECURE sites help keep you safe from identity theft, credit card fraud, spyware, spam, viruses and online scams
Pursue Your Passion
Seekins Precision

Seekins Precision IRMT3 Billet Upper black 223

Seekins Precision IRMT3 Billet Upper
Only 5 left

Availability: In stock




Seekins Precision’s Integrated Rail Mounting technology (IRMT) uppers integrate the rail mounting points into the upper retaining the stiffness of a true monolithic upper while allowing the rails to be completely modular. This new upper design is considerably thicker in the most critical area and will aid in squeezing all of the potential accuracy out of your AR15 rifle. Instead of a standard barrel nut our IRMT system uses an externally threaded, Steel barrel nut with 1-1/8” wrench flats on it for simple installation. No special proprietary wrenches needed.

The IRMT-3 V3 Upper is only compatible with the Seekins Precision SP3R V3 rail system.

Ships with a forward assist & dust door already installed.

weight: 13.20oz

Additional Info

Additional Info

SKU 0010900011
Manufacturer Seekins Precision
Finish black
Barrel Length No
Caliber 223
Configuration No
Option No
Gas Length No
Height No
Rail Length No
Mount No
Profile No
Reticle No
Co Witness No
Size No



Feel free to ask us any question regarding this product.

At Rainier Arms you can find the best AR15 Parts. The Seekins Precision IRMT3 Billet Upper black 223 can be purchased for $255.00. Go to to buy your Seekins Precision IRMT3 Billet Upper black 223 now.