https://www.alpharomeo15.org/ Sat, 13 Jun 2026 18:30:23 +0000 MyBB https://www.alpharomeo15.org/Thread-10-mm-PCC Sun, 17 May 2026 17:05:15 +0000 srjdsmith]]> https://www.alpharomeo15.org/Thread-10-mm-PCC always get better velocity/energy than a pistol/handgun/shorter barrel. This seems not to be true for 10 mm ammo (and others). There’s a diminishing increase above about 10”-12”, right? Is it actually diminishing out to 16”, or just no appreciable increase?

But, it seems that one can reload with slower burning powder and get better performance out of carbine/rifle length barrels. There’s also a bolt & barrel combination that delays the blow-back.

But, then, where’s the advantage? if i need pistol ammo for my G20 (clone) and different, specially loaded rifle ammo for a PCC, what have I gained? If that’s so, i may as well build a 10 mm AR pistol instead of a PCC.

Thoughts?


(Oh. I’m specifically thinking whitetail deer hunting in Iowa.)]]> always get better velocity/energy than a pistol/handgun/shorter barrel. This seems not to be true for 10 mm ammo (and others). There’s a diminishing increase above about 10”-12”, right? Is it actually diminishing out to 16”, or just no appreciable increase?

But, it seems that one can reload with slower burning powder and get better performance out of carbine/rifle length barrels. There’s also a bolt & barrel combination that delays the blow-back.

But, then, where’s the advantage? if i need pistol ammo for my G20 (clone) and different, specially loaded rifle ammo for a PCC, what have I gained? If that’s so, i may as well build a 10 mm AR pistol instead of a PCC.

Thoughts?


(Oh. I’m specifically thinking whitetail deer hunting in Iowa.)]]> https://www.alpharomeo15.org/Thread-Sig-MCX-Rattler-LT Sat, 24 Jan 2026 05:08:08 +0000 Rampy]]> https://www.alpharomeo15.org/Thread-Sig-MCX-Rattler-LT
Now to figure out what optic, light & sling 

Figure a Sig can sooner or later as Sig used rocksett on the flash suppressor so it’s not coming off

]]>
Now to figure out what optic, light & sling 

Figure a Sig can sooner or later as Sig used rocksett on the flash suppressor so it’s not coming off

]]> https://www.alpharomeo15.org/Thread-Pistol-Caliber-AR15-PICTURE-Thread Thu, 27 Jul 2023 03:16:42 +0000 Emptymag]]> https://www.alpharomeo15.org/Thread-Pistol-Caliber-AR15-PICTURE-Thread 9mm build (circa 2016)

Standard AR lower (Anvil Arms PAFOA limited run)
PSA 9mm mag block insert (for Colt pattern SMG mags)
Stag LPK
Anderson Sport slick side upper
CMMG 14.5" barrel 4150 chrome lined bore and chamber with a A2 permanently attached for a total length of 16.1
12" ALG Defense EMR V1 handguard
Anderson 7075-T6 buffer tube/spring
Spikes buffer spacer
Rock River Arms 9mm bolt
Rock River Arms heavy buffer
Magpul BUIS
Mission First Tactical Minimalist stock - grey
Magpul MOE grip
Red paracord stock strap & front sling attachment point (made by me)
Frank Proctor sling
Odin Works XMR 2 extended mag release - anodized red
Strike Industries ARCH-EL (extra large) Charging Handle - anodized red
Rainier Arms Modified Trigger Guard
Sig Sauer vertical fore grip
Sightmark red dot
Generic weapon light with Magpul mount
PSA/Metalform 32 rd SMG mag







]]> 9mm build (circa 2016)

Standard AR lower (Anvil Arms PAFOA limited run)
PSA 9mm mag block insert (for Colt pattern SMG mags)
Stag LPK
Anderson Sport slick side upper
CMMG 14.5" barrel 4150 chrome lined bore and chamber with a A2 permanently attached for a total length of 16.1
12" ALG Defense EMR V1 handguard
Anderson 7075-T6 buffer tube/spring
Spikes buffer spacer
Rock River Arms 9mm bolt
Rock River Arms heavy buffer
Magpul BUIS
Mission First Tactical Minimalist stock - grey
Magpul MOE grip
Red paracord stock strap & front sling attachment point (made by me)
Frank Proctor sling
Odin Works XMR 2 extended mag release - anodized red
Strike Industries ARCH-EL (extra large) Charging Handle - anodized red
Rainier Arms Modified Trigger Guard
Sig Sauer vertical fore grip
Sightmark red dot
Generic weapon light with Magpul mount
PSA/Metalform 32 rd SMG mag







]]> https://www.alpharomeo15.org/Thread-S-W-9mm-FPC Sun, 16 Jul 2023 14:33:10 +0000 Snake46]]> https://www.alpharomeo15.org/Thread-S-W-9mm-FPC



Comes with one 17 round and two 23 round magazines..fits handily in trunk of my Spyder..]]>



Comes with one 17 round and two 23 round magazines..fits handily in trunk of my Spyder..]]>