Bartlein or Kreiger Optics Upper

Service Rifle Upper in .223 caliber. This upper is assembled and is complete with an A4 (flat top) receiver, complete bolt carrier group, charging handle, service rifle float tube with A2 handguards, gas tube, and railed gas block.

Service Rifle Upper in .223 caliber. This upper is assembled and is complete with an A4 (flat top) receiver, complete bolt carrier group, charging handle, service rifle float tube with A2 handguards, gas tube, and railed gas block.

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