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If you find yourself pivoting your AR-15 open on a regular basis, you already know the annoyance: pull the front takedown pin loose and the whole upper wants to dive forward under the weight of the barrel. That flop pinches fingers, throws off your grip, and makes reloads slower than they need to be. The Cross Armory Flop Stop puts a stop to it by holding the upper in the open position, so the receiver stays put and you can work with both hands free and steady.
Think of the Flop Stop as a hard limit on how far the upper can rotate forward. When the receivers are separated at the front takedown pin, it catches the upper and holds it open instead of letting gravity yank it down. The result is a faster, cleaner reload and a more stable rifle in your hands. It plays nice with other setups too, so it isn't locked to any single brand of hardware and will work alongside whatever fixed magazine gear you're already running.
This version ships with Cross Armory's Pin Pal, which is a smart upgrade in its own right. Opening and closing an AR over and over wears on the aluminum receiver where the steel takedown pin rides. The Pin Pal solves that by pressing a lubricated captive bearing into the receiver, so the steel pin bears on the bearing rather than grinding on the aluminum. That keeps the front pivot point tight and slop-free over the long haul. The pin and locking nut are machined from 4140 ordnance steel with a black melonite hard coat, and the whole thing is removable if you ever want to go back to your factory setup.
Setup is straightforward and takes just a few minutes. You separate the receivers, seat the captive bearing into the upper with a nylon mallet, then slide the Pin Pal in and snug down the locking nut. No special tools required, and the Pin Pal fits any standard AR-15 configuration. If you already own a Pin Pal, the Flop Stop slides right onto it.
Yes, the Flop Stop mounts onto the Pin Pal front takedown pin to function. This bundle includes both, so you have everything you need in one box. If you already own a Pin Pal, the Flop Stop will slide right onto your existing one.
It's designed to fit any standard AR-15, M16, or M4 configuration. The Pin Pal replaces your factory front takedown pin, so as long as your rifle uses a standard front pin setup you're good to go. It also works alongside other compliance and fixed magazine products, not just Cross Armory gear.
Repeatedly opening and closing your AR wears the aluminum receiver where the steel takedown pin rides, which eventually creates slop in the front pivot. The Pin Pal presses a lubricated captive bearing into the receiver so the steel pin bears on the bearing instead of the aluminum. That keeps the front pivot tight and functioning like it did from the factory.
Installation is simple and takes just a few minutes with no special tools. You seat the captive bearing into the upper with a nylon mallet, then install the Pin Pal and tighten the locking nut. It's fully removable if you ever want to return your rifle to its original factory configuration.
| UPC | 656793308764 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | CRFSPP |
| Model | |
| Product Type | Upper Receiver Stabilizer/Front Takedown Pin |
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