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Anyone who has run an AR hard knows the frustration of trigger and hammer pins backing out or slowly wallowing out the holes in the lower. The KNS Precision Non-Rotating Trigger/Hammer Pin set in .154 diameter puts a stop to that. Instead of relying on the standard detent spring to hold everything in place, this Gen 2 Mod 2 design ties the two pins together with a pair of exterior stainless steel sideplates, so nothing rotates, walks, or creeps once it is torqued down. The pins themselves are machined from stainless steel for strength and corrosion resistance, and this listing is the Desert Tan version with a DuraCoat finish that plays nice with FDE and tan builds.
These are built to shrug off the abuse that makes ordinary pins misbehave. KNS designed them to handle the pounding of full and semi-auto fire, including suppressed 9mm, .223, and 7.62 setups where increased blowback tends to shake pins loose fast. The anti-creep retainers keep constant rotation from grinding away at your receiver walls, which is exactly why these are a go-to upgrade for anyone shooting a lot, running a can, or protecting a lower they do not want to replace.
This is the .154 diameter set, which is the standard mil-spec size meant for AR-15 and M16 lowers with pin holes in good shape. If your receiver holes have already worn oversized from hard use, the .1555 version is the one built to snug those up instead. The .154 pins drop into most standard lowers and even tighten up free play in a lot of match triggers, and they play well with common drop-in trigger packs.
Installation is straightforward and requires no permanent modification to your rifle. The kit includes a pin installation tool and the Torx wrenches you need to get the job done at the bench. One thing to keep in mind: the screws have a maximum torque spec of 11 inch-pounds, though KNS recommends around 8 inch-pounds, and over-torquing can damage the sideplates, so go easy and read the instructions before you start.
Go with this .154 set if your AR-15 or M16 lower has standard, unworn trigger and hammer pin holes, which covers most rifles. The .1555 version is slightly oversized and made specifically for receivers whose pin holes have loosened up from heavy use. If your current pins fit snug with no play, the .154 is the right call.
No. The set is a drop-in upgrade that installs with the included tool and Torx wrenches, and nothing has to be machined, drilled, or permanently altered. If you ever want to go back to standard pins, you can pull these right out.
Yes, the .154 set is compatible with most popular drop-in trigger packs and standard mil-spec fire control groups. They can even remove free play in a lot of match triggers. Just note the .1555 size is the one specified for Rock River National Match triggers, and neither size fits the Jewell trigger system.
KNS lists a maximum of 11 inch-pounds but recommends around 8 inch-pounds for these sideplates. Over-torquing can damage the plates, so use a torque driver and do not gorilla them down. Reading the included instructions before install is well worth the couple minutes.
| UPC | 851876003240 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | NRTHPMOD2-154DE |
| Product Type | Trigger Pins |
| Model | |
| Color | Desert Tan |
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