Guys with SBR's, who running H2 buffers in a 10.3?

Site Notices

[ARCHIVED THREAD] - Guys with SBR's, who running H2 buffers in a 10.3? (Page 1 of 2)

Posted: 10/7/2019 1:28:50 PM EDT

LMT and DD both tell me run H Buffers. Well yesterday oredered a damn H2 buffer by mistake. Guys think it should be ok....Im in texas, so winter is a joke.

Posted: 10/7/2019 1:36:32 PM EDT

[#1]

Pretty sure I have a H2 and Sprinco blue in my DD Mk18. Should be ok.

Posted: 10/7/2019 1:37:42 PM EDT

[#2]

I think my suppressed 10.5 AR has an H3. You should be fine.

Posted: 10/7/2019 1:46:50 PM EDT

[#3]

Quote History

Quoted:
Pretty sure I have a H2 and Sprinco blue in my DD Mk18. Should be ok.

View Quote

FPNI/thread.

H2 or H3 and a BLUE.

ETA: OK, and the second post.

And the third for that matter.

Posted: 10/7/2019 2:00:42 PM EDT

[#4]

I have lmt buffer spring. This is going on a DD MK18.

Posted: 10/7/2019 4:26:03 PM EDT

[#5]

I have run H2 in F/A MK18s in 556 and 300BLK no problems.

Posted: 10/7/2019 8:05:09 PM EDT

[#6]

H2 has worked great for me and I shoot a lot of cheapo Wolf ammo. Using a newer DD 10.3" barrel.

Posted: 10/7/2019 8:21:36 PM EDT

[#7]

My 10.3 and 10.5 both have H2 buffers

Posted: 10/7/2019 8:55:09 PM EDT

[#8]

Sprinco blue + H2. Cycles and locks bolt on M193, match loadings, cheap .223 steel case, etc.

Posted: 10/7/2019 9:01:37 PM EDT

[#9]

600 rounds so far on my 10.3 URGI. 200ish was full auto. I have an H3 buffer. Works great no issues.

Posted: 10/7/2019 9:12:17 PM EDT

[#10]

So the Blue is generally regarded as the appropriate spring for a 10.3/10.5? Not the White?

Posted: 10/7/2019 9:14:18 PM EDT

[#11]

H2 or H3, whichever

Posted: 10/8/2019 8:30:55 AM EDT

[#12]

I have two PSA uppers on our AR15 pistols.

One 8.5" and one 10.5". Both have standard carbine springs and H2 buffers in them and both work great. Never had issues with either.

Posted: 10/8/2019 1:19:32 PM EDT

[#13]

Yeah..gonna keep the H2 the hell with it.
I got the spikes buffer. Thanks for the info guys.

Posted: 10/8/2019 5:29:05 PM EDT

[#14]

Std buffer and spring in a 6.8 11.3” barrel.

Posted: 10/8/2019 6:02:29 PM EDT

[#15]

H2 + heavy spring, (Wolff?) in personal gun
H6 + standard spring in work gun

Posted: 10/10/2019 8:21:34 PM EDT

[#16]

H2 with suppressor and adjustable BCG. No issues

Posted: 10/10/2019 8:35:02 PM EDT

[#17]

I run an H2 with a sprinco blue in my mk18. No issues.

Posted: 10/10/2019 8:43:35 PM EDT

[#18]

I'm running a JP SCS in H2 with a heavier spring (and adu gas block)

Buddy of mine is running his with an H2 and springco sprig

Posted: 10/10/2019 10:09:20 PM EDT

[#19]

I use a standard spring and H3 in all my 10.3" .070" CQBRs. No trouble cycling anything from Wolf .223 to full power 5.56 suppressed or unsuppressed. The one with the highest round count using that combo is just under 15k and the only real malfunction I've ever had was a failure to lock back on empty. And that was only after 2,600rds of suppressed shooting without cleaning.

That said, an H2 is pretty much standard on issued Mk18/CQBRs.

Posted: 10/13/2019 7:37:01 PM EDT

[#20]

Quote History

Quoted:
I use a standard spring and H3 in all my 10.3" .070" CQBRs. No trouble cycling anything from Wolf .223 to full power 5.56 suppressed or unsuppressed. The one with the highest round count using that combo is just under 15k and the only real malfunction I've ever had was a failure to lock back on empty. And that was only after 2,600rds of suppressed shooting without cleaning.

That said, an H2 is pretty much standard on issued Mk18/CQBRs.

View Quote

Thanks.

Posted: 10/13/2019 10:25:27 PM EDT

[#21]

H2 + Tubbs

Posted: 10/14/2019 2:23:35 PM EDT

[#22]

H3 + wolff xp

Posted: 10/15/2019 11:24:49 PM EDT

[#23]

H2 and a Sprinco blue was the combo that got my 10.3" setup running well.

Posted: 10/15/2019 11:57:07 PM EDT

[#24]

I run the heaviest buffer that still cycles reliaby.
H2 in my 10.5 and 11.5 5.56 guns with carbine gas.

Posted: 10/16/2019 6:52:29 AM EDT

[#25]

H3 and Geissele Super 42 here. Only run 5.56 NATO pressure ammo, and frequently suppressed.

Posted: 11/14/2019 10:46:08 PM EDT

[#26]

H2 and spri could blue in my 11.5, runs like a singer

Posted: 11/15/2019 10:41:56 AM EDT

[#27]

H2 and colt standard spring.

Posted: 11/15/2019 10:43:18 AM EDT

[#28]

Quote History

Quoted:
Pretty sure I have a H2 and Sprinco blue in my DD Mk18. Should be ok.

View Quote

same

Posted: 11/15/2019 10:56:39 AM EDT

[#29]

H2 buffer and standard spring works just fine for this setup with a 10.3" DD barrel

Posted: 11/15/2019 11:39:48 AM EDT

[#30]

I run a (spikes) H3 with a geissele braided spring in every SBR I own ... 7.5", 10.5", 12.5". All work fine but I also don't shoot any .223 or any other "lower power" 5.56 ammo. Not knocking anyone that does, just giving all the variables.

Posted: 11/16/2019 2:03:04 AM EDT

[#31]

H2+sprinco blue here. No issues with cheap steelcase all the way up to IMI Razorcore, which is pretty warm. If I get really lazy and the gun gets really dirty, sometimes it won't bolt lock. That's not a spring issue in my mind, just the action getting a bit gummed up.

Posted: 11/17/2019 11:31:22 PM EDT

[#32]

I've got an old Daniel Defense MK18 upper, the one with the .08whatever gas port. I've used a Tubb spring and 9mm buffer (heavier than an H3) for years. Suppressed or not, it's always run great. But I don't use Wolf or Tula ammunition.

Posted: 11/18/2019 9:20:30 PM EDT

[#33]

I use H2 buffers in all of my SBR's.

Wolff extra power buffer springs and extractor springs.

Posted: 11/20/2019 9:35:27 AM EDT

[#34]

My Colt 10.3” cut down by addco runs suppressed on an H2. My 10.5” Rock River suppressed had to go to a H3. Haven’t tried a heavy spring yet...

Posted: 11/23/2019 7:31:41 PM EDT

[#35]

My 10.3 LMT barreled SBR suppressed with an H2 and standard buffer spring spits casings out at EXACTLY 2:30 so constantly, I can put a 5 gallon bucket off to the side and have 90% land in it.

Posted: 11/24/2019 11:10:40 AM EDT

[#36]

My 10.3" runs a Geissele Super 42 spring and H2 buffer with a Bootleg adjustable carrier. Runs like a sewing machine

Posted: 11/24/2019 11:21:02 AM EDT

[#37]

anyone see a sale on h2 buffers? I need a couple

Posted: 11/24/2019 11:40:51 AM EDT

[#38]

My 10.3 runs a H2 and Sprinco blue. You’ll be just fine.

Posted: 12/2/2019 8:36:31 PM EDT

[#39]

I just put a 9mm buffer in my 10.5 and I am amazed how much smoother it shoots. It also works reliably with my 9mm and .300 BO uppers, granted the .300s were supers.

It will also hold open on an empty Pmag now, something it would not do with the old H buffer I had in it.

Posted: 12/10/2019 11:55:12 AM EDT

[#40]

Quote History

Quoted:
anyone see a sale on h2 buffers? I need a couple

View Quote

@snackgunner .... if you still need some I have 2 I'll send you if you want. One is a geissele and one a spikes (I think). Just IM me your address.

Posted: 12/26/2019 10:31:20 PM EDT

[#41]

Quote History

Quoted:
anyone see a sale on h2 buffers? I need a couple

View Quote

I make my own with Tungsten weights, a little less expensive

Posted: 1/1/2020 5:10:02 PM EDT

[#42]

H2, standard spring with an LMT 10.5 and Trek-t for me.

No issues.

Posted: 1/3/2020 12:06:28 AM EDT

[#43]

Whatever came from PSA in their Classic Pistol lower

Posted: 1/3/2020 8:44:36 PM EDT

[#44]

I’m about to finish a 10.3 with a BA Hanson barrel and Superlative G.B.

I have an H2 with a Blue spring to put in it, but with an adjustable GB, am I really gaining anything over just the H2 and standard spring?

Posted: 1/3/2020 8:52:37 PM EDT

[#45]

I use a H2 in my DD MK18 and it works fine

Posted: 1/4/2020 2:16:29 PM EDT

[#46]

Quote History

Quoted:
I’m about to finish a 10.3 with a BA Hanson barrel and Superlative G.B.

I have an H2 with a Blue spring to put in it, but with an adjustable GB, am I really gaining anything over just the H2 and standard spring?

View Quote

More force returning to battery and more muzzle movement, basically. I wouldn't necessarily call that gaining anything. It may give the impression of slightly softer rearward recoil, but it'll be slamming home the BCG with much more force.

I prefer standard springs, but if you want an increased power spring I'd go with a Tubb flatwire. Same closed bolt pressure as a Sprinco Blue, but the return to battery force is more in line with a new stock spring.

Posted: 1/4/2020 3:36:05 PM EDT

[#47]

Me.

Posted: 1/4/2020 4:22:08 PM EDT

[#48]

Colt 10.3” and H2 buffer here, shoot almost exclusively Wolf steel now without any problems.

Posted: 1/6/2020 4:49:58 AM EDT

[#49]

I run a Spikes STT2 with a JP extra power spring on a 10.5 with a KX5 for a muzzle device. Rifle ejects great and runs like a top

Posted: 3/13/2020 9:13:46 AM EDT

[#50]

My 10.5 LMT runs best with a standard carbine buffer. H2 would cause some issues.

I haven’t tried an H1.

[ARCHIVED THREAD] - Guys with SBR's, who running H2 buffers in a 10.3? (Page 1 of 2)

Armory » Short Barreled Rifles (SBR)

Warning

Confirm Action

About AR15.COM

Stay Connected

Newsletter

Contact Us