$2,169.95
5 in stock
Online inventory may differ from in-store availability.
Quick turnaround so you get your gear sooner.
Trusted checkout with industry-standard protection.
Keeping Traditions Alive Since 1953
Secure Transactions provided with 
Radian doesn't cut corners, and the Model 1 Complete Upper is proof. This is a fully assembled 6mm ARC upper built on a billet 7075-T6 receiver with an 18-inch match grade barrel, and it's ready to pin onto your existing AR-15 lower without any modification. Swap it on, load up some 6mm ARC, and you've got a rifle that reaches way past what a standard 5.56 build can touch. Radian backs the accuracy with a sub-MOA guarantee when you're feeding it Black Hills match grade ammo, which tells you how confident they are in the barrel and the assembly work behind it.
The barrel is 416R stainless with weight-reducing flutes, a 1:7 twist to stabilize the heavy high-BC 6mm projectiles, and 5/8×24 threading capped with a Dead Air KeyMo muzzle device. That KeyMo mount transitions straight to compatible Dead Air cans, so if you run suppressed this thing was built with you in mind. A rifle-length direct impingement gas system handles the dwell time on the 18-inch barrel, giving you smooth, consistent cycling across the full spread of ARC loads. The proprietary extended aluminum M-LOK handguard locks to the receiver with a stainless anti-rotation pin and gives you a continuous top rail plus slots for lights, bipods, and whatever else your build calls for.
The 18-inch length is widely considered the sweet spot for this cartridge. You get roughly 90 to 95 percent of the velocity a longer barrel would give you while keeping the rifle handy enough to carry all day. That means flat trajectories out past 800 yards on steel, honest performance on coyotes and predators, and enough retained energy to ethically take deer and antelope at practical field ranges. Recoil stays soft, so spotting your own impacts and getting back on target is easy.
Every Model 1 upper is assembled one at a time by a trained Radian gunsmith who inspects and test fires it before it ships. Fully ambidextrous handling comes courtesy of the Raptor-SD charging handle, which works from either side and is optimized for suppressed shooting. Radian stands behind the whole package with a lifetime guarantee, so this is a buy-it-once kind of upper for a serious long-range or hunting build.
Yes. It's built to mate with any standard mil-spec AR-15 lower receiver, so there's no modification needed. Pin it on, run a 6mm ARC magazine and matching ammo, and you're ready to go. Keep in mind you'll want dedicated 6mm ARC magazines rather than standard 5.56 mags.
It does. This complete upper ships with Radian's enhanced black nitride M16 BCG and the Raptor-SD ambidextrous charging handle already installed. That means the only things you're supplying are your lower, an optic, and ammo.
It's arguably the ideal length for the cartridge. The 18-inch barrel delivers around 90 to 95 percent of the velocity you'd get from a longer tube while keeping the rifle balanced and easy to carry. That translates to flat trajectories on steel out past 800 yards and enough retained energy for ethical shots on deer and antelope at practical ranges.
Absolutely. It comes threaded 5/8×24 and topped with a Dead Air KeyMo muzzle device that transitions directly to compatible Dead Air suppressors. The Raptor-SD charging handle is also suppressor-optimized to handle the extra gas, so this upper was designed with suppressed shooting in mind.
| UPC | 810098420952 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | R0903 |
| Action | |
| Barrel Finish | Black Nitride |
| Barrel Length | 18" |
| Caliber/Gauge | 6mm ARC |
| Color | Black |
| Product Type | Upper |
You must be logged in to post a review.
Reviews
There are no reviews yet.