KelTec PR-5.7 5.7x28mm Pistol with RFX11 Optic, Black The KelTec PR-5.7 pairs 5.7x28mm chambering with an RFX11 optic and a 20+1 capacity designation. The black slide and black frame define the appearance of this pistol configuration. The RFX11 is named as part of the optic-equipped package, making the included sight a meaningful part of the purchase. The 20+1 designation separates the stated ammunition capacity from the additional chamber position. The optic adds a sighting component to the pistol package, while the slide and frame colors identify the external configuration. These details distinguish the black PR-5.7 with RFX11 when choosing the intended firearm and sight combination. Key Features 5.7x28mm chambering: The specified pistol caliber. RFX11 optic: An optic is included in the named configuration. 20+1 designation: Capacity plus an additional chamber position. Two component colors: Black slide with black frame. Specifications Manufacturer: KelTec Model: PR-5.7 Caliber: 5.7x28mm Capacity: 20+1 Slide color: Black Frame color: Black Included optic: RFX11 Package Contents KelTec PR-5.7 pistol RFX11 optic Shop the KelTec PR-5.7 5.7x28mm Pistol with RFX11 Optic, Black at BattleHawk Armory.