ABC/R has finally made its way to 7.62mm, LR308 pattern ARs. ABC/R v2 (for either 5.56mm and 7.62mm ARs) has incorporated refinements and lessons learned since the ABC/R (v1, 5.56mm) was introduced in early 2015, it is now stronger, slimmer and has a much more durable coating (black nitride)
ABC/R version 2 consists of the following changes:
Deletion of lightening cuts
10% thinner, and tapered upper paddle to better clear wide billet upper receivers (tapered upper paddle design input from Military Morons)
Please note that though the ABC/R v2's upper paddle is angled and tapered, and we have tested it on upper receivers with a small, oval shaped bolt catch paddle cutout, such as found on DMPS's LR308 upper receiver, the upper corners of ABC/R v2 7.62mm may come in contact with receivers and mar it in two small places inside the cutout.
These are cosmetic only, they don't affect the functionality of the bolt catch. For receivers with a generous bolt catch paddle cutout, such as Rainier Arms, Mega, F4 Defense, etc. there is ample clearance for ABC/R v2, 7.62mm.
Machined from billet 8620 alloy steel and heat treated, or 17-7 stainless steel, available in black nitrided finish (8620) or raw (17-4 SS), bead blasted or polished finish, the ABC/R v2 is proudly designed and made in the US.
For more info on the dimpled ABC/R-AA, please follow this link ABC/R-AA
Please note the ABC/R was not designed for use on 9mm receivers that use Colt 9mm magazines which require a Colt 9mm bolt catch.
2A Armament Xanthos
ABC/R's top paddle's upper half is angled at 10 degree, and lower half is angled at 5 degree, to make accessing the bolt release easier when the bolt carrier is locked back. Our good friend Nate Schultz (known on various social media as NSZ85) has influenced the ABC/R's top paddle design.
Lightening cuts on the ABC/R, with its enlarged upper paddle, help keep the weight (0.445 oz) close to that of a factory bolt catch (0.401 oz)
The horizontal serrations of the top paddle continue further below, and terminate at the notch. The additional serrations here help provide more traction on the ABC/R's top paddle.
The notch immediately above the ABC/R's lower paddle serves an important function. It provides tactile feedback to the user as to the location of his finger on the bolt catch, and differentiates the two control surfaces on the ABC/R (upper paddle and lower paddle) without having to visually identify them. Visual identification takes time, and isn't always possible in low light conditions. This design input came from the famous gear guru, Military Morons.