Reviewer:
T. Owens from Glendale, AZ United States
My new MBX barrel loves 147 gr. ammo. I switched from the Standard hydro buffer with carbine length JP 308 spring, to the heavy hydro buffer with a rifle length JP 308 spring. The combination works great to accommodate the higher Power Factor (PF). Fast follow up shots with very low felt recoil. The HD buffer with a JP 308 Rifle length spring is perfect for high PF rounds.
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Great spring for Hydro buffer
December 20, 2018
Reviewer:
9yr USPSA PCC Competitor from GA United States
Installed with a Blitzkrieg Hydro buffer and it fits perfectly when paired with a carbine buffer tube, no spacer needed. BCG travels just beyond the bolt catch preventing stress that can damage the catch. This is as good as it gets when paired with the Hydro buffer. You won’t be disappointed. Just be certain you pair the correct spring with the buffer tube being used. Carbine tube - JP RIFLE Spring Rifle tube - JP CARBINE Spring