$18.99
5 in stock
Online inventory may differ from in-store availability.
Quick turnaround so you get your gear sooner.
Trusted checkout with industry-standard protection.
Keeping Traditions Alive Since 1953
Secure Transactions provided with 
Sprinco built its reputation on springs that just keep working, and this dual extractor spring kit is a favorite fix for AR-10 and .308 bolt carrier groups that hiccup on extraction. Each set pairs a 5-coil XP outer spring with an inner XP spring, stacking the tension so your extractor claw stays locked onto the case rim through the whole cycle. That extra grip is exactly what you want when you're running suppressed, shooting steel case, or putting rounds downrange in dusty, grimy conditions where a tired factory spring starts to slip.
These aren't your average replacement springs. Sprinco winds them from chrome silicon wire stock, then heat treats, stress relieves, and cryogenically processes each one so it holds its load over a long, hard service life. The company documents extractor springs surviving well past 200,000 rounds, which tells you these are built for the long haul rather than a quick patch. A re-micronized molybdenum disulfide plating cuts friction inside the bolt so the spring works smoothly cycle after cycle.
This is one of the easier upgrades you can do at the bench. Pop your extractor out of the bolt, swap the old spring and insert for the Sprinco dual spring assembly, and reassemble. No fitting, no modification, no special tools beyond a punch to knock out the extractor pin. Most folks have it done in about ten minutes, and the difference in extractor tension is something you can feel with your thumb.
Because you get three complete sets, you can upgrade multiple .308 builds at once or tuck the spares away for down the road. Springs are the kind of small part that eventually wears, and having replacements on the shelf means a fussy bolt never keeps you off the range for long. For anyone building or maintaining an AR-10 platform, this is a small investment that pays off in dependable feeding and extraction.
This kit is made for AR-10 and AR-308 bolt carrier groups chambered in .308. The dual spring design drops into a standard .308 extractor without any modification. If you have an AR-15, look for the 5.56 version instead, since these are sized for the larger .308 bolt.
No. The XP dual spring setup already provides heavier extractor tension than factory springs, so you generally don't need to add a D-Fender ring or extra O-rings on top of it. Sprinco notes the .308 dual spring sets can be run with or without CRANE O-rings depending on your bolt and preference.
Sprinco has documented a single extractor spring lasting well past 200,000 rounds, so these are built to outlast the bolt in most builds. The chrome silicon construction plus cryogenic processing helps them hold their spring load over an extreme duty cycle. For most owners, that means installing them once and forgetting about it.
Not at all. You just push out the extractor pin, swap the old spring assembly for the Sprinco dual spring, and reassemble the bolt. Most people knock it out in about ten minutes with a punch and no special tools.
| UPC | 657780264353 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 26435 |
You must be logged in to post a review.
Reviews
There are no reviews yet.