referring to fig1 , there is shown the bowstring release according to one embodiment of the present invention . the release 100 includes a body 10 , a release mechanism 20 and a safety pin 30 . optionally , the release 100 includes a pulling post assembly 40 . in one embodiment , the body 10 further contains a safety pin storage 12 . in embodiments in which the safety pin 30 is a threaded safety pin , the safety pin storage may have a threaded portion to receive and secure the safety pin 30 in place . referring now to fig2 a - 2b , a release mechanism 20 is affixed to the body 10 via hinge pin 24 . the hinge pin 24 allows the hinged release 22 to pivot along the axis defined by the hinge pin 24 . a bowstring hook 21 is attached to the hinged release 22 via a bowstring hinge pin 27 allowing the bowstring hook 21 to pivot along the axis defined by the bowstring hinge pin 27 . a safety lock hole 23 allows for attachment of the safety pin 30 ( shown in fig6 - 9 ). in one embodiment a sear 25 is attached to the body 10 . in use , the bowstring hook 21 rests against the sear 25 as a bowstring is pulled into the drawn position . when the release 100 is activated the bowstring hook 21 slides off of the sear 25 allowing the hinged release 22 and the bowstring hook 21 to pivot and release a bowstring ( not shown ). it is understood that the bowstring hook may be an open hook or a closed hook depending on the particular embodiment . fig2 b depicts an enlarged view of the sear adjustment 26 . by adjusting the positioning of the sear 25 , the user can fine tune the release point of the bowstring hook 21 . referring now to fig3 a - 3f , there is shown the safety pin 30 used for various purposes . in the embodiments shown the safety pin is a threaded safety pin . fig3 b is an enlarged view of the section circled in fig3 a . the safety pin 30 is placed in the safety pin storage 12 on the body 10 when not in use . fig3 d and 3f are enlarged views of the circled areas of fig3 c and 3e respectively . the safety pin 30 may be placed into either side of the safety lock 23 . this is advantageous as the device can be used for both left - handed and right - handed shooters . while the safety pin is shown as a cylindrical pin , it is understood that the safety pin may be of any shape so long as it physically blocks the bowstring hook 21 . referring now to fig4 , there is shown a schematic view of release 100 in the drawn position . in one embodiment , the release includes a pulling post assembly 40 . optionally , the pulling post assembly 40 is an adjustable pulling post assembly having a pulling post 41 attached to a threaded post 43 . the threaded post 43 being held into position on the body 10 by a set screw 42 . this allows the pulling post 41 to be angled and moved to the users preference . in another embodiment , the pulling post assembly 40 is a trigger mechanism used to activate the release . still referring to fig4 , there is shown the release mechanism 20 . the bowstring hook 21 rests along the sear 25 . when under tension , the bowstring hook 21 remains pressed against the sear 25 until the release is activated . as shown in fig5 , the release 100 has been activated . the bowstring hook 21 has moved off of the sear 25 and the tension from the bowstring allows the bowstring hook 21 and the hinged release 22 to move into the released position , thereby releasing the bowstring . with the safety pin 30 in the safety lock 23 the release mechanism 20 cannot fully activate . when the bowstring is drawn the release 100 is in the position shown in fig4 with the bowstring hook 21 resting on the sear 25 . when activated , the bowstring hook 21 slips off the sear 25 only instead of fully releasing , the bowstring hook 21 physically comes in contact with safety pin 30 . this prevents the bowstring hook 21 from fully pivoting and releasing the bowstring . however , because the bowstring hook 21 does slip off the sear 25 , the user is giving a tactile feel that the release has been activated . in one embodiment , this slipping also produces an audible sound . referring to fig6 and 7 there is shown an enlarged view of the release mechanism with the safety pin 30 removed . to engage the safety pin 30 , it is threaded into the safety lock hole 23 to lock the device as shown in fig8 and 9 . the safety pin 30 physically prevents the bowstring hook from fully releasing a bowstring when engaged . referring now to fig1 a - 10e , there are shown various releases . it is understood that the examples are merely demonstrative and are not intended to be limiting . for example , closed loop grips and the such may be substituted for the open design . in addition , the pulling post may be replaced with a trigger mechanism changing the release from a back tension release to a trigger type release . also a trigger mechanism as known to those skilled in the art my be added at locations other than the pulling post . in use , a shooter uses the release 100 to draw a bowstring . the bowstring hook 21 secures the bowstring and the shooter pulls back on the body 10 . the bowstring hook 21 rests against the sear 25 . when the release 100 is activated , the bowstring hook 21 slides off the sear 25 allowing the release mechanism to release the bowstring . however , if the safety pin 30 is placed in the safety lock 23 , the bowstring hook 21 physically contacts the safety pin 30 . this prevents the bowstring hook 21 from full range of motion and retains the bowstring in the bowstring hook . the slight movement of the bowstring hook 21 provides the user with a tactile signal that the release had been activated allowing for better training and fine tuning . while the invention has been described with reference to particular embodiments , it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention . in addition , many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the scope of the invention . therefore , it is intended that the invention not be limited to the particular embodiments disclosed as the best mode contemplated for carrying out this invention , but that the invention will include all embodiments falling within the scope and spirit of the appended claims .