ABC/R v3 (Augmented Bolt Catch / Release)

Your Price: $62.00
In Stock.
Part Number:ABC/R v3

Choose Options

Texture option
Upper paddle option
* 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 v3 MARS-L is designed for LMT's MARS-L, it will function on a standard, in spec lower receiver as well.

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.
5 Stars
Crafted. Engineered.
Put your name on the list. Wait. That other one you were looking at, is not as good. Wait!
Did you find this helpful?  10 of 11 Found Helpful
Reviewed by: (Verified Buyer)  from Cowpens. on 7/13/2020
5 Stars
Excellence in Every Aspect
FCD components are, in my opinion, some of the best components available for your AR-15. The larger paddle, larger serrations and the slightly ramped overhang at the top provide more surface area and grip for your thumb. The ramp makes it harder for the thumb to slip off the paddle under stress, and the raised lip at the top serves as a repeatable indexing point for both thumb or trigger finger (depending on left or right hand operation). The tail of the bolt catch is also angled up and flared out, protruding and giving the operator another repeatable index point, and the angle gives easier access and greater leverage, as well as providing more surface area for the operator's finger. But perhaps the most important feature of this product is the fact that it exactly mirrors the shape of the bolt catch scallop on the VLTOR MUR-1.
Did you find this helpful?  5 of 5 Found Helpful
Reviewed by:  from Pasadena MD. on 3/1/2021
5 Stars
Love it
Pic says it all FCD makes the best stuff on the market PERIOD
Did you find this helpful?  3 of 3 Found Helpful
Reviewed by:  from Texas. on 8/25/2020
5 Stars
Really nice upgrade especially for left handers
The ABC/R is my third favorite product after the CSF and ACF. I have the rearward baised dimpled version and after a couple months of doing many tac/rapid reloads during my training it has helped me out a ton. Combined with the EMR/A dimpled version, ASF, and ACF manipulating my guns is just so much better.
Did you find this helpful? 
Reviewed by: (Verified Buyer)  from Great Falls. on 5/15/2022
5 Stars
Positive palm slap release
The ABC/R v3 is a great example of Roger’s forward thinking design philosophy. The bolt release upper paddle is the perfect size and also angled perfectly to allow an easy fast bolt release by slapping it with your palm. Easy to find with your thumb but much faster and easier with your palm!
Did you find this helpful? 
Reviewed by: (Verified Buyer)  from Florida . on 5/5/2022

Recently Viewed Items