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Small part, big job. The cam pin is what rotates your bolt during lockup and unlock, and if it's worn, cracked, or out of spec, you're going to have feeding and extraction headaches down the road. Sons of Liberty Gun Works builds theirs from 4340 steel with a phosphate finish, giving it the strength and corrosion resistance you want in a part that takes constant friction and stress every time the action cycles.
SOLGW machines this cam pin to mil-spec tolerances and checks each batch for fit and function before it ships. That kind of quality control matters here because a cam pin that's even slightly out of spec can bind against the carrier or cause premature wear on the cam pin hole. Owners who've swapped one in after their factory pin showed a rough spot or wear groove note that these run a bit heavier than cast pins, which lines up with the tool steel construction and gives some peace of mind that it was made to spec rather than cast on the cheap.
This is a universal fit part, so it works across standard AR-15 and M4-pattern bolt carrier groups regardless of who made your upper or barrel. Installation is straightforward if you've ever field stripped an AR before: drift out the firing pin retaining pin, pull the firing pin, rotate the cam pin a quarter turn, and lift it free. Dropping in the new one takes just as long, making this an easy fix even for someone who isn't deep into gunsmithing.
Keeping a spare cam pin in your range bag or cleaning kit is one of those small habits that experienced builders swear by. It's a low cost part, but it's also one that's annoying to be without if yours ever fails mid-range-day. Given how cheap and easy it is to stash a backup, there's not much reason not to grab one or two extra while you're at it.
Yes, this is a standard mil-spec cam pin that fits AR-15 and M4-pattern bolt carrier groups regardless of brand. As long as your BCG is built to mil-spec dimensions, it will drop right in.
Look for wear grooves, rough spots, or a loose feel when it's seated in the carrier. If you're noticing cycling issues or just want peace of mind, swapping in a fresh cam pin is a cheap and easy fix.
Not at all. If you can field strip your AR-15, you can swap this in during a normal cleaning session using just the tools already in most cleaning kits.
It's a small part that's critical to how your bolt locks and unlocks, and it can wear out or fail without warning. Since it's inexpensive and easy to swap, most builders like to keep one in their range bag or spare parts kit just in case.
| UPC | 785939517934 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | CAMPINM4 |
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