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Anyone who has built an AR-15 knows the frustration of pins that slowly work their way out during a range session. The CMC Triggers Anti-Walk Pin Set (Small Pins) puts an end to that. These are precision .154" diameter pins that replace your standard trigger and hammer pins, then lock down with cap screws on each side so nothing rotates, vibrates, or walks out mid-string. It's a small upgrade that solves a genuinely annoying problem, and it's especially handy if you're running a drop-in trigger group where loose pins can throw off function.
Instead of relying on friction and a spring like factory pins, these thread together with screws that clamp against both sides of the receiver. That positive retention keeps everything locked and also cuts down on the slop that wears out your lower's pin holes over time. The pins are machined from steel with a black anodized finish, so they hold up and blend in with the rest of your build. They're built to fit standard USGI receivers that use small-diameter (.154") pins, and they play well with CMC's own drop-in triggers as well as traditional fire control groups.
CMC includes two wrenches and printed instructions, so you're not hunting around the shop for the right tool. Drop your fire control group in, seat the pins, then snug down the cap screws on each side. Plenty of folks add a dab of thread locker on the screws for extra insurance, and that's a smart habit if you shoot a lot. The whole job takes just a few minutes and doesn't require any gunsmithing know-how.
If you've ever pulled your rifle off the bench and noticed a pin has crept halfway out, you already understand why these are worth having. They're a simple, set-it-and-forget-it fix that keeps your trigger assembly tight and your receiver in better shape for the long haul.
This kit is made for AR-15 and AR-10 lower receivers that use small-diameter .154" trigger and hammer pins, which covers the vast majority of standard USGI-spec lowers. If you're unsure which pin size your lower takes, check your existing pins with a caliper before ordering. There's also a large-pin version available for the less common receivers that need it.
Yes, these are ideal for CMC drop-in trigger groups and they also work with traditional AR fire control components. The cap screws hold the assembly securely so a drop-in unit stays properly seated and functions consistently. They're a popular pairing with any quality trigger where you don't want pins creeping loose.
Not at all. The kit comes with two wrenches and instructions, and the whole job takes just a few minutes with no gunsmithing required. Seat the pins, tighten the cap screws on each side, and you're done. A drop of thread locker on the screws is a good idea if you want extra peace of mind.
Standard pins rely on spring tension and friction, which can let them rotate and slowly walk out under recoil, especially with some trigger setups. Anti-walk pins clamp in place with screws so they stay put and won't back out mid-session. As a bonus, the tighter fit reduces movement that can wear out your lower's pin holes over time.
| UPC | 850544004909 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 91401 |
| Color | ANTI-WALK AR-15 TRIGGER PINS |
| Length | 4.7000 |
| Model | |
| Product Type | Pin Set |
| Shipping Weight | 0.05 |
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