Olympic Arms UMAR-22250, Semi-Automatic, .22-250 Remington, 24" Barrel, 5+1 Rounds

Item # WX2-644507

Mfg. Number: OAI UMAR22250

UPC: 400008870016

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Details & Specs

Olympic Arms® UMAR-22250 .22-250 Semi-automatic Rifle

That's right... an AR-15 that shoots .22-250 cartridges. And made to be accurate, round after round. Take a look and you'll see what sets this Olympic Arms UMAR above the rest.

  • Modified UMAR AR-15 lower receiver magazine well. Designed specifically for the UMAR magazines to accept the venerable .22-250 caliber and long WSSM loads.
  • Threaded bolt catch hole: designed for a quick and easy change of your bolt catch between standard 5.56 magazine and the UMAR magazines
  • 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)
  • 24" button-rifled bull barrel
  • Long-life non-chromed bore
  • Crown muzzle
  • 5-round billet aluminum magazine

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Key Specifications
  • Item Number: 644507
  • Caliber: .22-250 Remington
  • Action: Semi-automatic
  • Capacity: 5+1
  • Barrel length: 24"
  • Barrel material: 416 stainless steel
  • Barrel twist: 1:14"
  • Stock: A2 with trapdoor
  • Upper receiver: Forged flat-top with Picatinny rail
  • Sights (front / rear): Gas block with Picatinny rail front
  • Handguard: Free-floating aluminum tube with rails
  • Overall length: 42.5"
  • Overall weight: 9.41 lbs.
  • Mfg. Number: UMAR22250
  • UPC: 400008870016
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