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1/22/2020 12:12:56 PM
Posted: 10/28/2012 12:39:43 PM EST
i want to order a spikes ar pistol .what length should i go with?does the carbine gas length make it more reliable?
Link Posted: 10/28/2012 1:07:17 PM EST
what are you going to do with it?
Link Posted: 10/29/2012 1:59:31 AM EST
If you don't already have a 10.5" or 11.5", I would go with the 10.5". Gives you better reliability, less crud in the system, better velocity.
If you do have one of those, go with a 7.5" Very compact, very loud, but it more in line with a "pistol" build.
Don't believe it's a "Toy" Good to 100 yards. Use Hollow Points or soft tips for defensive ammo.
Dave N
Link Posted: 10/29/2012 11:49:19 AM EST
thank you!

target /HD

what kind of groups do you get at 100yrds?
Link Posted: 10/29/2012 12:08:06 PM EST
If it were me, and it was once, I'd go for a 7.5 pistol upper. Based upon what I read from the experience of other folks, 7.5" DI uppers can run a little dirty and can be more finicky by running reliably. I wanted a pistol that was as compact as possible so the 7.5" bbl upper was the best choice for me.
Link Posted: 11/5/2012 4:20:45 AM EST
I've heard that 7.5 pistols have feeding problems and phase 5 tactical came up with a pigtail gas tube that gives it better cycling. It's the same lenght as a rifle gas tube but since it wraps around the barrel its will fit a 7.5 barrel
Link Posted: 11/6/2012 2:28:32 AM EST
If you build a 7.5" using quality parts, it runs fine.
I built one using a Rainier Ultra Match barrel. Small gas port and it runs great.

Dave N
Link Posted: 11/7/2012 6:25:34 AM EST
[Last Edit: 11/7/2012 6:27:01 AM EST by Black-Lions]
7.5's are fun !!

Link Posted: 11/8/2012 4:57:05 PM EST
[Last Edit: 11/8/2012 4:59:29 PM EST by RogueSpear2023]
I knew I was going to end up building another one of these, thanks guys, I already have a 11.5" I enjoy it, but those 7.5" look like fun. The 11.5" with A2 flash hinder doesn't seem any different muzzle blast or noise from shooting a full 16" barrel IMO. Maneuverability you can definitely tell it's shorter.
Link Posted: 11/10/2012 8:21:28 AM EST
[Last Edit: 11/13/2012 5:20:02 PM EST by TurtleGunners]
Just finished a 7.5" build

Haven't fired it yet, hopefully hitting the range tomorrow, so will report back with an update and maybe some video
Link Posted: 11/10/2012 9:43:50 PM EST
[Last Edit: 11/10/2012 9:44:46 PM EST by Black-Lions]
I haven't shot a [ X ] in a long time !!
Link Posted: 11/10/2012 10:04:27 PM EST
10.5 is what I went with, enough room for a light and most people to hold onto and use about the same as a carbine. very happy with it from palmetto state armory.

AR pistols are real tools and not just toys. you are going to want both in the end...
Link Posted: 11/11/2012 7:14:13 AM EST
I do want to build one. It's coming in the near future
Link Posted: 11/11/2012 11:09:03 AM EST
Originally Posted By justshutupnhunt:
I do want to build one. It's coming in the near future

It's SOOO much fun..!!

Hard to see on video, but the flash is like a mushroom cloud in the photos

Link Posted: 11/13/2012 6:33:38 AM EST
I'd look at the 10.5 so if eventually you decided to make it a SBR down the road you have a more versatile weapon. If you just want an AR pistol get the 7.5 and let the fire ball make you smile
Link Posted: 11/14/2012 5:18:16 PM EST
I built a 7.5 inch pistol that i love. Eats everything I put threw it. No issues yet,but only time will tell. Love this site and first time poster.
Link Posted: 11/15/2012 4:03:21 PM EST
Originally Posted By Midwest03:
I built a 7.5 inch pistol that i love. Eats everything I put threw it. No issues yet,but only time will tell. Love this site and first time poster.


And we want pics
Link Posted: 11/16/2012 9:33:46 AM EST
Once I get my magpul afg and my new nickel boron bcg I will post pics for sure.
Link Posted: 11/16/2012 10:49:40 AM EST
[Last Edit: 11/16/2012 10:54:10 AM EST by BoxofRox]
When I build mine I plan on running a barrel in the 10 inch area, any shorter seems like it would be too short. Hell I have a glock with a 6 inch barrel, so for me 10 inches would be a good area.

I was thinking a Noveske 10.5" with a carbine length port.
Link Posted: 11/16/2012 4:50:38 PM EST
Man I seen this one on gun broker in 7.5. I would not let my worst enemy buy this thing.

you think you could fix these ramps ?? WOW !!
Link Posted: 11/21/2012 10:27:45 AM EST
DD 10.3" is my plan.
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