I have one a friend built. I want to convert it from a carbine stock to a rifle stock.

Will the buffer and spring for a 5.56 work?

I have a complete Magpul rifle stock with spring and buffer.

If not, what needs changed?

It should work to the best of my knowledge. There are others here that know more than I do though. I'd try it myself, it either will or won't and it's really hard to tear up a buffer or spring.

Good points.

Yes.

Yes. Buffers and springs are not caliber specific. They just need to be correctly balanced with your gas system (i.e. use the correct buffer weight for the amount of gas so it runs right) and the correct parts for the buffer tube. Don't mix carbine buffers in rifle tubes or vise versa.

Thanks

Should work. I slapped my 6.5 Grendel on 5.56 stock and it is running well. You should be fine. If you see that your brass is a bit beat up it may require to shorten the spring on the ejector.

As long as you're talking small frame calibers vs other small frame calibers....large frame is a whoooole other ballgame.

But as the grendel is still a small frame, for this discussion there's no difference.

Well, yeah, I thought that was a given. But even then, it's still not caliber specific, it's long buffer tube vs AR15 tube. (the large frames can use either one)

You can't use a standard ar15 carbine length buffer in an ar15 carbine tube on a large frame receiver.

Yes, I think most of us are aware of that as well.

Unless it is a PSA PA-10 gen two, then you can, because only the part forward of the trigger (i.e. the magazine well) is "AR-10" size. The rest of the parts are interchangeable with an AR-15.

I run an A2 stock on my Grendel. Did not change anything. I do not like collapsible stocks but have them. In a .300 BLK I'm running a H3 buffer but don't need it. If it is not ejecting right then try an adjustable gas block. This will fix most cycling problems if there are any. If you run a rifle stock vs a collapsible you will have to run a rifle spring and buffer like has been said. I believe you will be very impressed with the Grendel. I have one in AR platform and a bolt action. I like them both.

And that means it's not a large frame now doesn't it?

armedferret - you seemed like a pretty decent and knowledgeable guy until just recently, but your last few replies sound like you're really looking for an argument. What's up?

Thinking of trying a PSA 6.5 grendel or a 6.5 Creedmoor upper.

Anyone know whose barrels they use?

Any personal experience with either?

Tag.
I’m thinking my next build will be a 6.5 Grendel pistol for hog killing at the Ranch.

Have shot both and cain't know the source of either. The Kreedmire boasts the latitude(s) associated,to grant the ability to shoot 147's in a Self Shucker...which the 264 Grendel ain't even begin to fathom.

Hint..................(grin)

Pretty sure psa makes their own barrels. They bought their own hammer forging equipment. They had pictures over on AR15.com This was covered awhile back.

I cain't know.

What I can know,is that their stuff SHOOTS.

Hint....................(grin)

Probably has much to do with others attempting to start an argument by being pedantic. I have no problem dropping to that level and gettin muddy if people wanna drag me to it.

Here's a 12" PSA barreled grendel that'll maybe shut people up and keep the discussion on forking topic.


Grendel by .com/photos/171117699@N03/]Professor Horseyhead, on that photo hosting site they have the name of censored because it hurts precious lil feelers

I've got an 18" SS PSA upper showing up tomorrow. I'll be interested in seeing how it shoots. I'm hoping my 10yr old will use it this fall for caribou. I picked up some Fusion ammo thinking it might hold together better than the SST or ELD stuff, though it's not flinging at magnum speeds.

the 130 grain Berger Federal match is 7/8" accurate in my gun.

I'll have to give that a try. I tried some 123gr ELD-M Hornady Black and could only get about 1-1/4". Saturn 5R barrel. It was the first time out for that upper.

As much as I want accurate, I also want performance on game. Caribou are relatively easy to kill but I don't want bullets blowing up either.

Bergers make great game bullets.

Barnes is my go-to for most hunting. ELDs at subsonic veolicty out of my 10.5" blackout fragmented badly enough on a CNS neck shot that half a shoulder was lost. I can't imagine what would have happened with something moving even faster.

Interestingly, 125SST out of the same rig (obviously over twice the speed, 2200ish fps) yielded no fragmentation found, complete pass-through, inch-ish sized exit hole and lung soup with a 25-yard "escape" and then drop. Caribou are a bit larger though, so I'd side with you that something more sturdy is in order. for a 6.5, 100/120TTSX or 120/130 TSX BT (there's a 130 FB as well) would not disappoint. Yes there's cheaper options out there for range time and such, but i do love me some Barnes leg-humping time. Guilty pleasure.

'Bou are easy to kill.

Sometimes they act like they don't know it, though.

Had to look it up. Who knew?

A pedant is a person who is excessively concerned with formalism, accuracy, and precision, or one who makes an ostentatious and arrogant show of learning. Wikipedia

Rampant on the internet, no?