JP Tuned and Polished Extra Power Large Frame Carbine Buffer Spring
Ratings & Reviews
Used for a .450 build
by Mark -
Used this spring and a Guntec AR 9 buffer in my .450 Bushmaster carbine build. Rifle cycles fine with Hornady Black ammo. Casings eject 90 degrees about 3-4 feet. Bolt stays open after last shot.
by Brian -
I installed in a Colt AR9 with Spike ST9 buffer. Runs flawless and functions excellent. High quality.
Stick with 308 build not 9mm
by Matthew -
Purchased for a 9mm build, coupled with a 6.5oz extra long buffer. Too much. I'd advise using a lighter buffer with this or a standard spring with a heavy buffer. Otherwise you run the risk of short strokes and burst shots.
I use my guns for work and I recently did a high end AR build. This product was brand new and I purchased through Geissele. These guys have never made a crappy product. They took the AR buffer and spring to the next level. Immediate and noticeable recoil reduction smoother cycling weapon and the gun is 100% steadier on full auto. I promise you it will be the best $60 you ever spent on a gun part.
JP Tuned and polished buffer spring
by joseph clark
As can be expected, Primary Arms has the best price 95% of the time and fast / reasonable shipping. My go to source.
don't have all the parts yet for my 308 build, but this spring is beefier than the others out there. can't wait to try it.