Sprinco M4 / AR-15 Red Extra Power Carbine Buffer Spring
Details
Details
Features:
- For carbine length buffer tubes
- Color coded red
- Extra power
- Made from chrome silicon wire stock
- Heat treated and shot peened
This recoil spring is color coded red indicating that it is optimal for use with 5.56 AR-15s with a carbine length gas system and buffer tube with a 16” barrel. Sprinco has extensively tested this setup and have concluded that it also works great with thumper cartridges like .458 SOCOM, 6.5 Grendel, .450 Bushmaster, and more. It also helps you to easily identify which power spring you have in your AR-15 if you have a habit of changing your setup constantly.
California Prop 65 warning
WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.
Ratings & Reviews
5 reviews
A must have for thumper cartridges. (.450 Bushmaster)
by Tony -
Works extremely well with thumper cartridges.
(.450 bushmaster)
great spring
by john -
best buffer spring out there have them installed in all my ar's 556,300blk,7.62x39 with 10.5 in. barrels along with 4.6 oz. buffers all cycle fine
Great spring, but not for 12.5" carbine length barrel
by Nick
Great spring, but not optimal for my system:
12.5" BCM carbine length barrel
H1 buffer, also tried standard buffer weight
Wouldn't lock back on last round. Gonna try a blue spring.
Shells going past 3 o’clock
by Ramiro -
Shells going past 3 o’clock the spring well definitely help; It won’t be the only step you’ll need to bring your shells ejecting at 3 o’clock but it’ll help and It’s a really good spring.
Not Heavy Enough for PCC build
by Aaron -
For my personal build, this spring is not even close, to being Heavy Enough, for my 45acp PCC, maybe it will work for you.