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 degree to give it even more surface area. These measures put the lower paddle and Ambi-Catch's paddle on different vertical planes. That done, they worked on the top paddle. While they don't use it ourselves, preferring to pull back on the charging handle instead to load and reload, they 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 version 3 consists of the following changes:

• Ledge on top of the upper paddle, and bottom of the lower paddle to increase traction.
• "Butterfly" lower paddle with increased surface area, while maintaining a healthy standoff distance from an ambidextrous magazine catch's lever.
• Slightly lengthened magazine follower trip.  Do note that the longer magazine follower trip is designed to make the bolt hold open after the last shot more reliable with more magazine varieties, but not meant to be a fix for out of spec receivers. They can lengthen it to a degree before running into unintended consequences by making the trip too long.

Machined from billet 8620 alloy steel and heat treated with DLC finish. The ABC/R v3 is proudly designed and made in the USA.

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, they do not support ABC/R for use on 9mm PCC. ABC/R was designed for use on 5.56mm AR15/M16.