Description
Anyone who has run a lightweight AR through a long range session knows that a bare polymer buttplate is not doing your shoulder any favors. The Allen 18431 Snap-On Recoil Pad fixes that in about ten seconds. It's a soft synthetic rubber pad with an internal steel frame that stretches over the butt plate of most M4 and AR15-style folding stocks, giving you a cushioned, slip-resistant surface between the rifle and your shoulder.
How the Allen Snap-On Pad Earns Its Keep
The rubber compound soaks up a good chunk of felt recoil, which matters more than you'd think on ARs chambered in heavier rounds or on carbines with stiff buffer setups. Beyond softening the push, the textured back face grips your shoulder so the gun stays planted when you're shouldering fast or working follow-up shots. It measures right around 5.5 inches tall, 2 inches wide, and 1.25 inches thick, so it keeps a low profile without throwing off your cheek weld.
Fitment and Install on Your AR15 Stock
This one is built specifically for folding stocks sized to the M4/AR15 platform, and it snaps on tool-free. You just stretch it over the existing butt plate and it holds by friction, no screws or grinding required. Because it adds a touch of material at the rear, it also nudges your length of pull out slightly, which taller folks tend to appreciate. Worth checking your stock's rear dimensions against the pad if you're running something non-standard, since slip-on pads are sized for common mil-spec shapes.
Simple Upgrade, Real Comfort
There's not much to overthink here. If your rifle wears a compatible folding stock and you want more comfortable range days without spending big or breaking out tools, the Allen Snap-On is one of the easiest quality-of-life upgrades you can bolt onto an AR. The all-black finish blends in cleanly with just about any build.
Key Specifications
- Manufacturer: Allen Company
- Manufacturer Part Number: 18431
- Model Number: 18431
- UPC: 026509075424
- Fitment: Most M4/AR15 folding stocks
- Color: Black
- Material: Steel and synthetic rubber
- Width: 2 inches
- Height: 5.5 inches
- Thickness: 1.25 inches
- Installation: Snap-on, tool-free
- Surface: Slip-resistant
What’s Included
- Allen 18431 Snap-On Recoil Pad
Frequently Asked Questions
Will the Allen Snap-On Recoil Pad fit my stock?
It's designed to fit over most folding stocks built to the M4/AR15 platform, snapping on by friction with no tools. Because slip-on pads are sized for common mil-spec shapes, it's smart to compare your stock's rear butt plate dimensions before ordering. Non-standard or oddly shaped stocks may not get a snug hold.
How much does this recoil pad actually reduce felt recoil?
The soft rubber compound noticeably takes the edge off the sharp push you get from a bare polymer buttplate, especially during longer range sessions. It won't turn a hard-kicking rifle into a rimfire, but it makes extended shooting a lot more comfortable on the shoulder. The added cushion is where most of the benefit comes from.
Does the pad slip when I shoulder the rifle?
No, the rear face has a slip-resistant texture that grips your shoulder and helps keep the stock planted. That comes in handy when you're shouldering quickly or running follow-up shots. It's one of the reasons the snap-on style is popular for range and general-use builds.
Do I need any tools to install the Allen Snap-On pad?
Not at all. You simply stretch it over the existing butt plate of your folding stock and it holds in place, no screws, glue, or grinding needed. Install takes only a few seconds and it comes off just as easily if you want to swap it around.





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