A subsea tree configured for use with a well (310, 410), comprising: - a flow bore configured to establish fluid communication with the well (310, 410) when the subsea tree is installed, wherein the flow bore comprises a vertical flow bore positioned within a master block of the subsea tree; - a flow hub in fluid communication with the flow bore and configured to allow fluid communication with the well (310, 410) through the subsea tree; - a block coupled to and non-retrievable from the subsea tree when the subsea tree is installed, wherein the block comprises: an upper conduit; a lower conduit; and a conduit fluidly coupling the upper conduit and the lower conduit, wherein the upper conduit, the lower conduit, and the conduit are in fluid communication with the flow bore, and wherein the upper conduit and the lower conduit are each oriented horizontally with respect to the vertical flow bore; a choke disposed in the upper conduit, the lower conduit and the conduit, wherein the choke comprises a retrievable choke insert that is oriented horizontally with respect to the subsea tree and is independently retrievable from the block when the subsea tree is installed, and wherein a flow path of a fluid is through the flow bore and directed through the choke and the flow hub; a swab valve disposed in the flow bore and configured to be selectively closed so that the fluid flowing through the flow bore is directed through the choke; and a master valve, disposed in the flow bore below the swab valve configured to be selectively closed so that the fluid flowing through the flow bore is stopped. - a flow bore configured to establish fluid communication with the well (310, 410) when the subsea tree is installed, wherein the flow bore comprises a vertical flow bore positioned within a master block of the subsea tree; - a flow hub in fluid communication with the flow bore and configured to allow fluid communication with the well (310, 410) through the subsea tree; - a block coupled to and non-retrievable from the subsea tree when the subsea tree is installed, wherein the block comprises: an upper conduit; a lower conduit; and a conduit fluidly coupling the upper conduit and the lower conduit, wherein the upper conduit, the lower conduit, and the conduit are in fluid communication with the flow bore, and wherein the upper conduit and the lower conduit are each oriented horizontally with respect to the vertical flow bore; a choke disposed in the upper conduit, the lower conduit and the conduit, wherein the choke comprises a retrievable choke insert that is oriented horizontally with respect to the subsea tree and is independently retrievable from the block when the subsea tree is installed, and wherein a flow path of a fluid is through the flow bore and directed through the choke and the flow hub; a swab valve disposed in the flow bore and configured to be selectively closed so that the fluid flowing through the flow bore is directed through the choke; and a master valve, disposed in the flow bore below the swab valve configured to be selectively closed so that the fluid flowing through the flow bore is stopped. an upper conduit; a lower conduit; and a conduit fluidly coupling the upper conduit and the lower conduit, wherein the upper conduit, the lower conduit, and the conduit are in fluid communication with the flow bore, and wherein the upper conduit and the lower conduit are each oriented horizontally with respect to the vertical flow bore; a choke disposed in the upper conduit, the lower conduit and the conduit, wherein the choke comprises a retrievable choke insert that is oriented horizontally with respect to the subsea tree and is independently retrievable from the block when the subsea tree is installed, and wherein a flow path of a fluid is through the flow bore and directed through the choke and the flow hub; a swab valve disposed in the flow bore and configured to be selectively closed so that the fluid flowing through the flow bore is directed through the choke; and a master valve, disposed in the flow bore below the swab valve configured to be selectively closed so that the fluid flowing through the flow bore is stopped.