* ABC/R is designed and made for TDP spec AR15/M16 in 5.56mm. Due to the wildly varying configurations of PCCs it is not advisable to use ABC/R on 9mm carbines. Do not use ABC/R on PCCs.
* ABC/R is machined from a solid piece of 8620, tool marks are sometimes inevitable, they are cosmetics in nature and have no impact on functions. For anyone that cares more about how things look than how they work, there are lesser built and less expensive bolt catches that have no tool marks. We are not in the business of making decorations to look at, or color matching. We design and produce components for defense, LE, and MIL issued weapons.
ABC/R (Augmented Bolt Catch/Release) with its angled and
larger top paddle and lower paddle with increased surface area, is purpose
designed for use with AR15/M16 receivers equipped with ambidextrous magazine
releases. Specifically, it is designed to address the difficulty with accessing
the factory bolt catch's lower paddle with an ambidextrous magazine catch, such
as Norgon's Ambi-Catch, on the receiver. Many of the ambidextrous mag release's
lower paddle is on the same vertical plane as the factory bolt catch lower
paddle, making identification difficult by feel, especially with a gloved hand.
The ABC/R's chief effort is focused on that single issue.
The lower paddle protrudes further, and is angled at 10 degrees to give it even
more surface area. These measures put the lower paddle and Ambi-Catch's paddle
on different vertical planes. That done, we worked on the top paddle. While we
don't use it ourselves, preferring to pull back on the charging handle instead
to load and reload, we do recognize far more users use it, so the ABC/R's top
paddle is made larger, and given a 5 degree angle at the lower 50%, and 10
degree angle at the upper 50% cant. The angled paddle makes it easier for the
palm or thumb to access.
The notch immediately above the ABC/R’s lower paddle isn’t
there by accident. As you run your finger down the bolt catch towards the lower
paddle, the notch is meant to provide tactile feedback to indicate the
beginning of the lower paddle. It is important be able to differentiate one
control surface from another, all without diverting one's gaze to it.
ABC/R v3 upper paddle options accommodate individual user's reloading
technique. Upper paddle options include FB (forward biased), standard
(centered, non-biased), and RB (rearward biased).
FB (forward biased) is for right hand users that wrap their
left hand around the magazine well, and use their left thumb to press the bolt
catch's upper paddle. The FB version has the upper paddle shifted to the
muzzle end to facilitate this reloading method. Incompatibilities:
Standard (non-biased) upper paddle remains the same position
as v1 and v2 ABC/R, its upper paddle isn't biased towards the front or rear.
RB (rearward biased) is for left hand users that use their
extended left index finger to access the bolt catch paddles. The RB
version has the upper paddle shifted to the butt stock end to make the upper
paddle more accessible.
The "butterfly" lower paddle's
horizontal extension increases the lower paddle's surface area, but stops short
of reaching the bottom of the bolt catch in order to create a stand off
distance between the extension and an ambidextrous magazine catch's
lever. It is our opinion and observation that close proximity of two
control surfaces is best avoided. The butterfly lower paddle has
increased surface area, and doesn't interfere with an ambi mag catch's lever.
Machined from billet 8620 alloy steel and heat treated with
DLC finish. The ABC/R v3 is proudly designed and made in the USA.
For more info on the dimpled ABC/R-AA
, please follow this link
Please note the ABC/R are not designed for use on 9mm receivers. Due to the wide range of tolerances and designs that vary drastically from 5.56mm specs, we do not support ABC/R for use on 9mm PCC. ABC/R was designed for use on 5.56mm AR15/M16.
ABC/R v3 with forward biased upper paddle may need minor fitting to work with BCM Mk2 upper receivers.