Buffer and spring question

[GarandThumb]

For a 6.5 grendel build does a standard rifle buffer/spring combo work or do you need to run something that is heavier or lighter?

[bwaites]

Rifle buffer works fine in rifles out to 24". In carbines, heavier buffers have been used with great effect. Standard springs are fine, but I like Tubb flat springs and others really like the JP captured spring.

[LRRPF52]

It really depends on your gas system length and gas port diameter, but an AR15 rifle buffer and spring are one of the better options when looking at reliability across a wide range of rifle and carbine configurations.

I've seen the rifle buffer/spring combo in a rifle extension tube work reliably on:

* 24" RLGS
* 20" RLGS
* 18" MLGS with too large of port, but an adjustable gas block choked almost all the way closed

[GarandThumb]

Thanks guys, exactly what I was looking for.