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UMAR-22250F - FLUTED UMAR chambered in .22-250

Quick Overview

The UMAR .22-250 with a 20" OR 24" fluted barrel

Availability: Available (built to order)


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The Only AR-15 that can be chambered in .22-250 Rem.

The famous UMAR (ultimate Magnum AR15) chambered in .22-250, with a 20" or 24" FLUTED stainless steel bull barrel. 

1. Modified UMAR AR-15 lower receiver magazine well. Designed specifically for the UMAR magazines to accept the venerable .22-250 caliber (also available in the WSSM chamberings)

2. Threaded bolt catch hole: designed for a quick and easy change of your bolt catch between standard 5.56 magazine and the UMAR magazines, (Which use different bolt catches). Swap back and forth in seconds!

3. All modified UMAR lower receivers can also readily accept every standard AR-15 upper and caliber option. The UMAR lower is applicable to all AR-15 calibers from .22 LR and 5.56 NATO, to the WSSM and .22-250 calibers. Just swap the upper, the magazine and the bolt catch (if needed).

4. UMAR magazines come in two varieties:
.22-250 or WSSM/OSSM

5. The UMAR is standard with the military A2 buttstock assembly, but can be ordered wityh an optional ACE Skeleton stock.  


Regular suggested retail is $1,786.20

Standard Features include:

  • Your choice of side-sling mount or bi-pod mount
  • 5 round billet aluminum magazine (Caliber specific)
Upper type: Forged flat top w/ picatinny rails
Front sight:  Gas block w/ picatinny rails
Handguard: Free floating aluminum tube w/ rails
Barrel:  FLUTED 24” Bull, button rifled, 416 Stainless steel
Chambering: .22-250 REM, .223 WSSM, .243 WSSM, .25 WSSM, .300 OSSM
Bore:  Long-life non-chromed bore
Twist rate: 1x14
Muzzle: Crown
Stock: A2 w/ trapdoor or optional ACE Skeleton stock 
Length/Weight:  42.5” / 8.9 lbs

Additional Information


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Olympic Arms, Inc. is not affiliated with the IOC/USOC or any other Olympic sports organization.