$25.99
9 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 
This is the spring combo that put Sprinco on the map. The XP buffer spring here is the same Red Extra Power design the company was first asked to develop back in 2006 to solve M4 carbine reliability headaches in the field, and it's still one of the most trusted upgrades in the AR world. Pair it with the included dual .308 extractor spring set and you've got both ends of your action working better, all in one kit.
The XP (Red) spring runs stiffer than a standard mil-spec action spring, which helps tame over-gassed rifles, suppressed setups, and heavier calibers. That extra tension slows bolt velocity a touch, which smooths out felt recoil and keeps timing consistent shot after shot. It's a popular pick for 16-inch and longer barrels running carbine gas systems, gas piston guns, later Colt LE6920 carbines, and thumpers like 6.8 SPC, 6.5 Grendel, .458 SOCOM, .450 Bushmaster, and .500 Beowulf. It also fits AR-10 carbines using deeper extension tubes with standard carbine buffers.
Sprinco doesn't use music wire or 17-7 PH like most OEM and budget aftermarket springs. These are made from ASTM Grade A877 certified valve-quality chrome silicon, the same stuff used in Formula One valve springs that see millions of compression cycles. Each buffer spring is heat treated, stress relieved, and dual-stage shot peened, then treated with a re-micronized molybdenum disulfide coating that cuts mechanical wear and kills that annoying "boing" sound you get from standard springs. The buffer spring is rated for well over 1.5 million cycles, and Sprinco has documented single extractor springs going past 200,000 rounds.
The dual extractor spring set is built for AR-308 bolt carrier groups and delivers noticeably more extraction pressure than tired factory springs, which keeps things running when conditions get dirty. These sets can be run with or without CRANE Viton O-rings depending on your bolt. It's close to a plug-and-play upgrade and may well be the last extractor spring your bolt ever needs.
The XP (Red) buffer spring shines on over-gassed and suppressed builds, 16-inch and longer barrels running carbine gas systems, and gas piston guns. It's also a go-to for bigger bore calibers like 6.8 SPC, 6.5 Grendel, .458 SOCOM, .450 Bushmaster, and .500 Beowulf. AR-10 carbines with deeper extension tubes and standard carbine buffers work with it too.
No, the dual .308 XP extractor spring sets can be run with or without CRANE Viton O-rings, so it comes down to your specific bolt and how it's set up. For most builds it's close to a plug-and-play swap. Some DPMS G2 bolts running full-auto may require the O-rings.
The chrome silicon buffer spring is rated for more than 1.5 million cycles, which is far beyond what most rifles will ever see. On the extractor side, Sprinco has documented single springs going past 200,000 rounds and still counting. For the vast majority of shooters, this is a set-it-and-forget-it upgrade.
It should. The molybdenum disulfide coating on Sprinco springs cuts down on the metallic spring "boing" you often hear with standard action springs. On top of the quieter operation, that coating also reduces mechanical wear inside the buffer tube.
| UPC | 657780253081 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 25308 |
You must be logged in to post a review.
Reviews
There are no reviews yet.