Seekins Precision is a company specializing in the development and manufacturer of AR15 components, and a quick look at their rails, upper, and lower receivers shows they are not simply rehashing the ideas of projects of someone else. Shown in the below pictures is the Integrated Rail Mounting technology (iRMT) upper, and the SP3R rail.
The iRMT upper is a billet 7075 reinforced upper receiver which uses a titanium barrel nut to secure the associated rail. Most notable to us isn't that they chose to use a titanium barrel nut, but that they took a new approach and machined a receiver which works as a male interface to the female rail. It is easy to see in the pictures that the rail slides neatly into place, and is then locked down via 12 screws. The SP3R rail is flat on the bottom, and is designed for 3 gun matches or similar events where barricade shooting is often involved. Rails are available in 12 or 15 inch lengths, and we found this setup very easy to install. The design negates the need to line up a barrel nut for a gas tube, and since the barrel nut works with an adjustable wrench, this really is an easy project for the do it yourselfer.
MSRP on the upper receiver is $299 and $249 for the rail. Jump ahead for more info from the manufacturer.
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Overview
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 rifle. Instead of a standard barrel nut our iRMT system uses an externally threaded, Titanium barrel nut with 1-1/8" wrench flats on it for simple installation. No special proprietary wrenches needed.
SP iRMT-3 Upper is compatible with the Seekins Precision SP3R rail system.
Details
- Seekins Precision Billet iRMT-3 Upper
- CNC Machined from 7075-T6 Billet
- M4 Feed Ramps
- Mil-Spec 1913 Picatinny Rail
- Integrated rail mounting technology
- Titanium barrel nut included
- Type III Class 2 Hardcoat Anodized Finish
Overview
The SP3R rail was designed out of necessity from shooting 3 gun and sniper competitions where barricade or improvised shooting positions are frequent. At only 2" wide it fits perfectly into your hand and it is extremely light weight. On a barricade, barrel, ledge or port opening the flat surfaces give you a sturdy rest allowing for super fast, accurate shot placement. The slots on the rail integrate with our T-nut attachment method for simple, solid mounting. Modular accessory rails are field adaptable and can be attached in any slot around the circumference without removing or reaching inside the hand guard. The SP3R comes with all mounting hardware, a full length top rail and two 2.5" long rail sections. the The SP3R rail is available in 12" or 15" lengths.
Details
- 6061 T6 Construction
- Seamless and removable top rail
- 1pc free float design
- 6AL4V Titanium barrel nut
- Mil-Spec 1913 Picatinny accessory Rails(2)
- Type III Class 2 Hardcoat Anodized Finish
- 6 Machined in Anti-Rotation QD sling mounts
