10mm ar info

[knockonit]

Well as i'm bored to shiate, these days, been putting together some newbies, we fingered out the who, what and why on the .45 acp platform ar, and now i'm on to the 10mm, platform, so anyone that has info, and frankly not a fan of the other brothers opinion unless it has some validity to it by real experience, so if you do have info and and all would be appreciated, as knowledge in my thoughts are Power .

thanks and happy friday
Rj

 

[h8pvmnt]

Interested to hear this as well. I am really digging the 10mm and sorry it took so long to get on to it. Wish my APC-9 was 10mm or there was a 10mm scorpion mags are probably the issue. Do you think the 10mm will run in the .45 acp mags?

 

[kenpoprofessor]

Interested to hear this as well. I am really digging the 10mm and sorry it took so long to get on to it. Wish my APC-9 was 10mm or there was a 10mm scorpion mags are probably the issue. Do you think the 10mm will run in the .45 acp mags?

I'm also currently attempting to put together a 10mm. I had the barrel ordered, waited for a year, then they cancelled it :evil: . I already have a large mag lower I use for my .45's, so I can use the 10mm Glock mags with the upper. Already have a .40/10mm bolt ready to go as well.

Beauty of this setup is, I can use my large mag lower for .45/10mm, and the small mag lower for 9mm/.40 with this new upper.

Have a great, gun carryin', Kenpo day

Clyde

 

[knockonit]

well after days of interest on my part and gleening thru so many intelligent and coherent threads all over the webs, i've come to the conclusion, that the recommended barrel length on the 10mm ar is 11 to 15 inches, for most accuracy.
Now barrels are offered from 4.5 in up to 18 inch if found.
the .45acp lower or .40 /10 can be used. understanding is grease gun mags, in.45, some aftermarket in .10mm or if a glock lower then glock 10mm mags are viable. needs propriety bcg for 10mm, all other crapola same. ect.

so big issue is finding parts, or complete uppers, ect.
so with that said as i have a couple .45 lowers, may just opt to pick up a couple uppers in different lengths and just the swap out when changing calibers till i decide its viable to go dedicated or.............................
will advise once i find some parts and burn some powder.
happy friday
Rj

 

[kenpoprofessor]

well after days of interest on my part and gleening thru so many intelligent and coherent threads all over the webs, i've come to the conclusion, that the recommended barrel length on the 10mm ar is 11 to 15 inches, for most accuracy.
Now barrels are offered from 4.5 in up to 18 inch if found.
the .45acp lower or .40 /10 can be used. understanding is grease gun mags, in.45, some aftermarket in .10mm or if a glock lower then glock 10mm mags are viable. needs propriety bcg for 10mm, all other crapola same. ect.

so big issue is finding parts, or complete uppers, ect.
so with that said as i have a couple .45 lowers, may just opt to pick up a couple uppers in different lengths and just the swap out when changing calibers till i decide its viable to go dedicated or.............................
will advise once i find some parts and burn some powder.
happy friday
Rj

BCG is the same for .40/10mm, but a 10mm barrel will shoot .40, and not the other way around.

Have a great, gun carryin', Kenpo day

Clyde

 

[Suck My Glock]

While my CMMG Banshee is 9mm, it has been 100%, and I hear that their 10mm version has also been stellar, using Glock mags.

As a 10mm fan myself, my only real question would be if one would have to change out buffers in order to run the sedate low end power stuff that is similar to .40, and the high power stuff the 10mm can really do. I would like to be able to fire the full-power stuff, but also throw some soft subsonic through a suppressor. Sure, 200 grainers would do that, but 180 grainers would be easier to source and more common. If you had to have a lower power spring and lighter buffer to cycle the low stuff, and left it in when you ran the hotter pills, that would be likely to lead to damage or at least reduce service life and risk part breakage.

 

[knockonit]

hmm, if i remember right banshees have a different bcg lock up ,not a blow back, which is what most pcc are, again learning curve, as with the 9mm, many things had to be taken into consideration, spring buffer, spacer, ammo, suppressor, no supressor, its like anything else one shoots, dedicate the lower, upper and be done, or fool around with change outs,

i have dedicated suppressor units, in almost all things shootable, and like them, but i also like to change it up, out of boredom or the desire to learn or make one.
for me its in the doing, fingering it out, and executing, the $$$ while can be inportant, are not high on the priority list.

Its like a fishing lure, if it catches fish, you buy it, or make one to rival it.

9mm was easy, .45acp was a rough one, but the learning curve was long and wrought with delays of material, locations to test, and weather.

i'm off to see the pcc Wizard.
Rj

 

[kenpoprofessor]

hmm, if i remember right banshees have a different bcg lock up ,not a blow back, which is what most pcc are, again learning curve, as with the 9mm, many things had to be taken into consideration, spring buffer, spacer, ammo, suppressor, no supressor, its like anything else one shoots, dedicate the lower, upper and be done, or fool around with change outs,

i have dedicated suppressor units, in almost all things shootable, and like them, but i also like to change it up, out of boredom or the desire to learn or make one.
for me its in the doing, fingering it out, and executing, the $$$ while can be inportant, are not high on the priority list.

Its like a fishing lure, if it catches fish, you buy it, or make one to rival it.

9mm was easy, .45acp was a rough one, but the learning curve was long and wrought with delays of material, locations to test, and weather.

i'm off to see the pcc Wizard.
Rj

Ditto on the "changing things up", it's a learning tool, and it teaches me what will work with what. Hell, half of my love of guns is figuring out how they work, and try to make them better at a reasonable cost.

Have a great, gun carryin', Kenpo day

Clyde

 

[Azrckcrawler]

Well as i'm bored to shiate, these days, been putting together some newbies, we fingered out the who, what and why on the .45 acp platform ar, and now i'm on to the 10mm, platform, so anyone that has info, and frankly not a fan of the other brothers opinion unless it has some validity to it by real experience, so if you do have info and and all would be appreciated, as knowledge in my thoughts are Power .

thanks and happy friday
Rj

I had one and gave up on it. Essentially 10mm blowback rifles will be near impossible to get to run with all possible projectile loads due to needing a 2.5lb buffer/bolt combo for 155gr loads up to a 3.6lb bolt buffer combo for 220gr loads. I documented all this complete with a blowback calculation spreadsheet to back it up here: https://www.10mm-firearms.com/miscellaneous-10mm-firearms/tactical-edge-rd-10-review/

There just isn't enough room in the buffer tube of a typical Glock Lower AR style PCC to install enough weight to safely delay the bolt till the chamber pressure levels drop. The RD10 I was running shipped to me with a 2.7oz buffer from the mfg :shock: The only loads it would run was 40 S&W level stuff and shooting various 10mm level loads resulted in measurable case stretch and in many cases separation.

The TNW survivial rifle/pistol gets the bolt weight close to functional with a bolt and buffer @ 2.8lbs (if I remember correctly) and fed fairly well with their latest feed ramp. I never checked for case stretch when I had my TNW but I bet it is there some with 200+gr loads. While that gun looks like it has an AR style upper in reality it is a custom piece which allows for a much larger bolt than the more common AR based PCC's.

If you still want to try it, any Glock lower style PCC is going to need a rifle length buffer tube (if you want to run heavy weight projectiles) and the heaviest buffer you can get your hands on. The downside is heavier buffers can affect the feeding of lighter loads so you will most likely need to swap out the buffer weights when going down in projectile weight. Regardless, if you limit your ammo to 155-165gr 10mm loads then 2.5lbs bolt/buffer weight is entirely possible in an AR based PCC.

After the above learning experience I went rifle caliber for rifle lower (6.5 Grendel w/12" barrel) so I never tried any of the newer PCC's with bolt delay systems (roller delay, etc). I did remember reviews on one of them where they experienced case head separation on heavier loads which is the inadequate buffer weight/bolt unlocking early problem rearing it's head.

 

[kenpoprofessor]

I had one and gave up on it. Essentially 10mm blowback rifles will be near impossible to get to run with all possible projectile loads due to needing a 2.5lb buffer/bolt combo for 155gr loads up to a 3.6lb bolt buffer combo for 220gr loads. I documented all this complete with a blowback calculation spreadsheet to back it up here: https://www.10mm-firearms.com/miscellaneous-10mm-firearms/tactical-edge-rd-10-review/

There just isn't enough room in the buffer tube of a typical Glock Lower AR style PCC to install enough weight to safely delay the bolt till the chamber pressure levels drop. The RD10 I was running shipped to me with a 2.7oz buffer from the mfg :shock: The only loads it would run was 40 S&W level stuff and shooting various 10mm level loads resulted in measurable case stretch and in many cases separation.

The TNW survivial rifle/pistol gets the bolt weight close to functional with a bolt and buffer @ 2.8lbs (if I remember correctly) and fed fairly well with their latest feed ramp. I never checked for case stretch when I had my TNW but I bet it is there some with 200+gr loads. While that gun looks like it has an AR style upper in reality it is a custom piece which allows for a much larger bolt than the more common AR based PCC's.

If you still want to try it, any Glock lower style PCC is going to need a rifle length buffer tube (if you want to run heavy weight projectiles) and the heaviest buffer you can get your hands on. The downside is heavier buffers can affect the feeding of lighter loads so you will most likely need to swap out the buffer weights when going down in projectile weight. Regardless, if you limit your ammo to 155-165gr 10mm loads then 2.5lbs bolt/buffer weight is entirely possible in an AR based PCC.

After the above learning experience I went rifle caliber for rifle lower (6.5 Grendel w/12" barrel) so I never tried any of the newer PCC's with bolt delay systems (roller delay, etc). I did remember reviews on one of them where they experienced case head separation on heavier loads which is the inadequate buffer weight/bolt unlocking early problem rearing it's head.

Oooh, good information, thank you so much. It'll help me identify what is "going to go wrong" in the future :mrgreen:

Have a great, gun carryin', Kenpo day

Clyde

 

[knockonit]

yip, good info, will keep all apprised as i progress and or fail
Rj