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Pictorial Bipod Comparison - TBAC and Atlas CAL

leftyk82

Son of a Son of a Sailor
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Oct 8, 2014
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Eagleville, TN
Using straws to illustrate apex (Bipods attached to KRG Spigot, Rem Varmint contour barrel).

Atlas CAL



7101935


TBAC

7101936


Bird's eye view when attached to KRG Spigot

Atlas CAL

7101937


TBAC

7101938


Measured width of bipod - difficult to capture

Atlas CAL - approx. 3.625 inches (measured from outside the knurled knob ledge)

7101940


TBAC - approx. 3.875 inches

7101942


Table view of both

7101953


Tandem table view of both (aligned on center of tension knob)

7101954


View showing forward nature of legs (albeit different mounts, but aligned on pic rail)

7101955
 
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Few notes on the TBAC:

-still getting used to the three pairs of buttons/levers to actuate
-spring loaded legs​
-returning deployed legs to stowed​
-adjusting deployed legs to 45 degrees​

-enjoying the pull to deploy legs; like Harris except these lock in place automatically

-overall finish, fit and appearance is very attractive; more so than the CAL

-changing feet is tool-less and simple

-there is a similar 'give' of preload like I've come to expect from Atlas bipods

-I think I like the placement of the tension knob better than the CAL (see last picture above). It seems to decrease the amount of real estate needed
 
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The Atlas bipod as well as TBAC and others use the ARMS 17S pattern mount. ARMS has a trademark on the term "17S" so you may see it called 170S or some other variation. Larue calls it the LT271. The standard ARMS 17 (not S) used with the ARMS Harris bipod adaptor is longer than the 17S and not compatible with any of the bipods discussed in this thread.
 
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I'll tell you that I ended up deciding the CAL was the better fit for me.

The ease of deployment of the TBAC legs earn top marks; much easier than the Atlas offerings and smoother than the Harris.

The extensions, while easy to attach, are where things fell short for me (no pun intended). I'm very tall, nearly 7 feet, so the extensions are a must-have. However, when attached, they do not lock in as solidly as the Atlas extensions. Don't get me wrong, they don't want to come loose or anything, but the rigidity isn't there. The TBAC bipod itself has some give or play to absorb a load put into it; all good and fine. But with the extensions it now has two points of give, almost like it is double jointed. I just didn't like the feel it gave when shooting.

If TBAC comes out with a tall version of their bipod, like Atlas has done, then I'll give it a look because the precision of the built, the feel and features are very desirable. But for me and the extensions, the CAL is more rigid.