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Adapter for mounting the Magpul ACR™ stock or brace to your B&T APC Firearm.
There are two variants for this adapter. This one is for the pistol caliber APCs (.45, 9mm).
The ACR stock shouldn't interfere with casing ejection while folded in most configurations.
Machined from 6061 aluminum and hardcoat anodized black (Mil-A-8625 Type III Class 2).
Installing ACR™ stock requires a 3/16" roll pin punch.