CMMG HD AR-15 Pivot & Takedown Pin Set, Black — 55AFF3B
$18.95
CMMG 55AFF3B heavy duty AR-15 pivot and takedown pin set in black finish. Slightly longer than standard mil-spec with a divot for improved grip and easier removal. Fits AR-15 lowers. Detents and springs not included.
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Standard AR-15 takedown and pivot pins get the job done, but their flush profile makes removal with dirty or cold hands more difficult than it needs to be. The CMMG 55AFF3B HD pin set addresses that with two straightforward improvements: each pin is slightly longer than mil-spec to give you more to grip, and each features a divot machined into the body so your fingernail or a pointed tool has a positive seat for pushing the pin out. Simple changes, noticeably better field-strip experience.
CMMG 55AFF3B Kit Contents
- 1x CMMG HD takedown pin — black finish, divot, slightly longer than standard
- 1x CMMG HD pivot pin — black finish, divot, slightly longer than standard
HD vs Standard Mil-Spec Takedown Pins
Standard mil-spec takedown and pivot pins are plain cylinders — no grip features and no extra length. They function correctly but offer no advantage for removal. The CMMG HD designation means these pins have been modified specifically to make disassembly easier: the added length gives your fingers more surface area to push against, and the divot gives a tool or fingernail a defined contact point rather than a smooth round surface. Detents and springs are not included and should be sourced separately.
CMMG 55AFF3B Specifications
| Manufacturer | CMMG |
|---|---|
| SKU | 55AFF3B |
| UPC | 815835017563 |
| Type | Heavy Duty (HD) Pivot & Takedown Pin Set |
| Color / Finish | Black |
| Length | Slightly longer than standard mil-spec |
| Feature | Divot for grip and easier removal |
| Compatibility | AR-15 mil-spec lower receivers |
Browse more Pins and Springs at Daytona Tactical.
| Weight | 0.5 lbs |
|---|
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What does “HD” mean on these CMMG pins?
HD stands for Heavy Duty. In this case CMMG’s HD designation refers to the enhanced ergonomic design — slightly longer than standard mil-spec pins with a machined divot — rather than a change in base material. The pins are designed to be easier to remove during field stripping compared to standard flush-profile mil-spec pins.
Are detents and springs included with the this product?
No. The this product is a pin set only — one takedown pin and one pivot pin. Detents and springs for both positions must be sourced separately. See our Pins and Springs category for compatible detent and spring options.
How much longer are these than standard mil-spec pins?
CMMG describes these as “slightly longer” than standard mil-spec takedown and pivot pins. The added length is a functional improvement for removal rather than a significant dimensional change — the pins remain compatible with standard mil-spec lower receivers.
Will CMMG HD pins fit any AR-15 lower?
Yes. These pins are designed for AR-15 pattern rifles built to mil-spec lower receiver dimensions, including completed 80% lowers. The slight additional length does not affect compatibility with standard lower receivers.
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