text: fig1 shows a side view of a shooter 20 holding a firearm 22 in a classical shooting position . fig2 is a top view of a shooter 20 holding a firearm 22 in a classical shooting position . in the classical shooting position , the shoulders 24 and feet 26 of the shooter 20 are at approximately 30 degrees angle to the direction of the firearm 22 . the butt stock 28 of the firearm 22 is held firmly against the shoulder pocket 30 of the shooter 20 . the head 32 of the shooter 20 is leaned forward so that the cheek 34 of the shooter 20 is firmly against the top of the butt stock , 28 of the firearm 22 , thus forming a cheek weld between the cheek 34 and the butt stock 28 of the firearm 22 . the dominant eye 36 of the shooter 20 is in line with the sights 38 . the classical shooting position provides a stable platform from which to shoot . it is well suited for hunting , target shooting and other non - tactical situations ; however , it is not the preferred shooting position for tactical or close quarters battle ( cqb ) situations . the body armor 40 typically used in tactical situations protects the front and back of the shooter &# 39 ; s torso 42 . however , the body armor 40 does not protect the dominant or non - dominant arm 44 or 46 of the shooter 20 . this means that if the shooter 20 uses the classic shooting position in a tactical situation , the shooter is increasing his risk of bodily injury by exposing to the threat the unprotected area where the shooter &# 39 ; s 20 non - dominant arm 46 attaches to the shooter &# 39 ; s 20 torso 42 . the classical shooting position also has the shortcoming in a tactical situation of limited visibility towards the shooter &# 39 ; s 20 non - dominant side . while shooting in the classical shooting position the shooter &# 39 ; s 20 non - dominant eye 48 typically is closed , also the shooter &# 39 ; s torso 42 is turned away from the shooter &# 39 ; s non - dominant side . both of these factors make it difficult for the shooter 20 to detect and confront a threat coming from the shooter &# 39 ; s 20 non - dominant side . fig3 shows a side view of a shooter 20 firing a firearm 22 from a tactical shooting position . fig4 shows a top view of a shooter 20 shooting a firearm 22 from the tactical shooting position . the firearm 22 is held in the ready position shown in dash lines in fig3 until a threat is confronted . in the ready position , the firearm 22 is held at a 45 degree angle pointing toward the ground . the butt stock 28 of the firearm 22 is held against the mid - clavicular line 50 . once the threat is confronted , the firearm 22 is rotated to a position perpendicular to the body of the shooter 20 . the firearm 22 is rotated about the point of contact between the butt stock 28 and the mid - clavicular line 50 of the shooter 20 . the shoulders 24 and feet 26 of the shooter 20 are perpendicular to the firearm 22 . the head 32 of the shooter 20 is in an upright and forward facing position . a cheek weld is established by having the top of the butt stock 28 firmly against the cheek 34 of the shooter 20 . the dominant eye 36 of the shooter 20 is in line with the sights 38 of the firearm 22 . as best seen in fig3 , the mid - clavicular line 50 of the chest of the shooter 20 is at an angle . therefore , when the tactical shooting position is used with a firearm 22 with a prior art butt stock 28 , only the lower rear corner of the butt stock 28 is resting against the shooter &# 39 ; s 20 mid - clavicle 50 . when the firearm 22 is fired , this small area of contact must absorb all of the recoil generated by the firearm 22 . it is also important to note the angle of the mid - clavicular line 50 of the chest can vary greatly from individual to individual . this variation and angle is largely due to differences in the development of the pectoralis muscles in the chest of the individual . this angle can typically range from 28 ° to 44 °. the shooter 20 must use this small area of the mid - clavicular line 50 of the chest to steady the firearm 22 . many firearms such as the shotgun 52 shown in fig5 have a stock where the butt stock 54 has an offset angle 56 . this helps raise the sights 58 such that when the firearm is shouldered the sight 58 are in front of the shooter &# 39 ; s 20 dominate eye 36 while allowing the rear surface of the butt stock or butt plate 60 to be low enough to engage the shoulder of the shooter . fig6 shows a firearm 22 typically known as the m16 or ar15 . this is the same firearm seen in fig1 through 4 . it should be noted that the butt stock 28 of the firearm 22 does not have a stock offset angle such as the shotgun 52 shown in fig5 , rather the butt stock 28 of the firearm 22 extends directly back from the receiver 62 . fig7 shows a firearm 22 equipped with one embodiment of the present invention , an improved butt stock , the tactical duo stock 66 . fig8 is a side view of the embodiment of duo stock 66 which is shown attached to the firearm 22 in fig7 . fig9 shows a shooter 20 holding a firearm 22 in the tactical shooting position . the firearm 22 is equipped with the same embodiment of the tactical duo stock 66 as shown in fig7 and 8 . the forward end 68 of the duo stock 66 is constructed to attach to the firearm 22 . it will be apparent to those skilled in the art that the forward end 68 of the duo stock 66 can be adapted to many different forms in order to attach to various different rifles , shotguns , and other firearms . the duo stock 66 also has a butt plate 70 . the back end 70 is made up of an upper section 72 and a lower section 74 . the butt plate 70 could be comprised of a separate plate attached to the rear of the duo stock 66 or it could be the rear surface of the duo stock 66 without any separate pieces being attached to the duo stock 66 . the butt plate angle 76 and the offset angle 78 are shown in fig8 . the preferred butt plate angle is 145 °, however , this angle could vary from 135 ° to 155 °. likewise , the preferred offset angle 78 for the duo stock 66 is 35 °, however , this could vary from a range of 25 ° to 45 °. while in the tactical shooting position as shown in fig9 , the lower section 74 of the butt plate 70 rests against the mid - clavicular line 50 of the shooter 20 . because the surface of the lower section 74 is generally parallel with the mid - clavicular line 50 of the shooter 20 , any force from the recoil of the firearm 22 is spread across the area directly underneath the lower section 74 . this is an improvement over the prior art butt stock 28 , as shown in fig1 – 4 and 6 . when that butt stock 28 is used in the tactical shooting position , the force from the recoil of the firearm 22 is directed through the lower corner of the butt stock 28 and against a much smaller area of the mid - clavicular line 50 of the shooter 20 . this increased area of impact created by use of the tactical duostock 66 helps soften the impact of the recoil allowing for faster follow up shots as well as reduced soreness and stiffness of the shooter 20 . this increased area of contact between the firearm 22 and the shooter 20 , due to the use of the duostock 66 also provides a more stable shooting platform . this in turn increases the comfort , speed , and accuracy of the shooter 20 &# 39 ; s performance . fig1 shows a shooter 20 holding a firearm 22 in a prone position . the firearm 22 is equipped with a tactical duostock 66 . in the prone position , the upper section 72 of the duostock 66 rests against the shoulder of the shooter 20 as with any conventional stock . fig1 shows a second embodiment of the tactical duostock 66 . in the second embodiment , the duostock 66 has an adjustable lower section 74 . the lower section 74 is pivotally attached to the upper section 72 and / or the body 80 of the duo stock . as shown in fig1 , there is a hinge 82 which creates the pivotal attachment for the lower section 74 . with the adjustable lower section 74 , the butt plate angle 76 can be adjusted to fit the angle of the mid - clavicular line 50 of the individual shooter 20 . this means a better fit for the shooter 20 while using the duostock 66 in a tactical shooting position . once the butt plate angle 76 has been adjusted to fit the individual shooter 20 , it can be used like the other embodiments of the duostock 66 , allowing the shooter 20 to move from a prone or classical shooting position to a tactical shooting position , or vice versa , without readjusting the butt plate angle 76 . the adjustable lower section 74 has a plate 86 which is attached to it . the plate 86 runs alongside the body 80 . there is a slot 88 in the plate 86 through which the lock 84 passes . the adjustable lower section 74 is held in place relative to the upper section 72 and the body 80 by the lock 84 holding the plate 86 in place . the embodiment shown in fig1 uses a cammed lock . however , those skilled in the art could adapt the present invention to use any of a number of locks known in the art . fig1 shows a firearm 22 equipped with a collapsible stock well known in the art . the collapsible stock is equipped with the duostock 66 . the butt plate 70 of the collapsible stock has the upper section 72 and a lower section 74 at an angle to the upper section 72 . the present invention works the same with the collapsible stock as it does with the other embodiments of the invention . it should be noted that the embodiment of the present invention shown in fig1 could be adapted to incorporate the adjustable butt plate feature shown in fig1 . the foregoing specifications and drawings are only illustrative of the preferred embodiments of the present invention . they should not be interpreted as limiting the scope of the attached claims . those skilled in the arts will be able to come up with equivalent embodiments of the present invention without departing from the spirit and scope thereof .