Cmmg 55Ca9Ac Qd End Plate Black Single Point Ar-15
The CMMG QD End Plate for AR-15 rifles gives you a quick-detach mounting point for single-point slings without welding or permanent modifications. This black end plate replaces your standard castle nut assembly and lets you swap slings in seconds—useful whether you're moving between shooting positions, transitioning to a pistol, or adjusting your setup for different terrain. It's ambidextrous, so it works equally well for left and right-handed shooters.
If you run a single-point sling on your AR-15, this end plate eliminates fumbling with traditional attachment methods. The QD mechanism uses a hook-style attachment, which means quick engagement and release without any play or rattle. Installation is straightforward on any AR-15 platform, making it a smart upgrade for hunters, competition shooters, or anyone who values practical sling management.
CMMG has been building AR platforms and accessories since 2002, so this part carries the expectation of reliable manufacturing. The ambidextrous design and straightforward function make it a versatile addition to any AR-15 setup, whether you're running it in the field or at the range.
Key Features
- Ambidextrous design works for left and right-handed shooters
- Quick-detach hook attachment for fast sling engagement and release
- Replaces standard castle nut assembly with no permanent modifications
- Compatible with AR-15 and LR-308 platforms
- Black finish
Frequently Asked Questions
What AR-15 models does this end plate work with?
The CMMG QD End Plate is designed to fit AR-15 and LR-308 rifles. It replaces the standard castle nut assembly at the rear of the receiver.
Does this work with single-point slings?
Yes. The QD end plate is specifically designed to accept single-point slings using its hook-style quick-detach attachment mechanism.
Is this ambidextrous?
Yes, the ambidextrous design accommodates both left and right-handed shooters equally.
What's included?
You receive the QD end plate itself. Installation requires removing your existing castle nut assembly and replacing it with this part.

