THE COMPLETE 9MM AR15 BUILD/INFO THREAD

[afteractionreport]

Never heard of the KAK mag block...im going to look em up....


Im waiting for the PSA magblock and some 10/32s i order from another vendor...

If the pSA doesnt work well ima go hahn and sell the PSA at cost...

Probably gonna attach a vortex reddot sight too...

Thanks for the YT link....

[jviz4u]

I'm also looking for good 10/30 colt mags. Any recommendations?

[jviz4u]

I broke my PSA 9 mm bolt today

My PSA 9mm bolt broke today. The screw holding the bolt carrier key broke clean today after 10 rounds. Called them, but since it was not serialized part and I traded that with another Calgunner, no warranty for me...
I used all PSA kit minus lower.
Any recommendations for repair/replacement from the experts?

[Kasspur]

Blowback Bolts use reverse spring loaded inertial firing pins. The hammer should never be able to physically extend the pin beyond the Bolt Face. All is well with what you're describing.

I tested this with a piece of painters tape on the back of a snap cap. Pulled the trigger and it indeed left a indentation on the tape. That is a good sign. Hope it hits hard enough to ignite a primer as well.

[afteractionreport]

My PSA 9mm bolt broke today. The screw holding the bolt carrier key broke clean today after 10 rounds. Called them, but since it was not serialized part and I traded that with another Calgunner, no warranty for me...
I used all PSA kit minus lower.
Any recommendations for repair/replacement from the experts?

Cmmg or RRA sell BCG

How is your PSA magblock working out?

[Chunky_lover]

My PSA 9mm bolt broke today. The screw holding the bolt carrier key broke clean today after 10 rounds. Called them, but since it was not serialized part and I traded that with another Calgunner, no warranty for me...
I used all PSA kit minus lower.
Any recommendations for repair/replacement from the experts?

if you can unscrew harbor freight sells left hand drill bits
you run them in reverse, at some point it will grip and unscrew
best to use alot of heat before trying to loosen the screw

then just replace them

[jviz4u]

Cmmg or RRA sell BCG

How is your PSA magblock working out?

I have 2 of PSA mag blocks. First works "OK" but have an a bit issues with loading full 10 rounds loaded CA restricted mags on close bolt. That no a big issue. Additionally it fail to load about 2-3% cases , specially on the last round in the magazine.
Today I used another lower with second mag block, and it run great for a full 10 rounds , until the bolt key broke :-(.
More tests after I will repair the bolt.

[Spyder]

I've got a PSA magblock in mine that has had near 1,000 rounds. Works fine.

[lone shooter]

Only problem I had was loading the stick mags, they are a serious PIA so a Lula smg mag loader is on the way.

Thanks for the tip. I need one of those.

[cowtown]

My PSA 9mm bolt broke today. The screw holding the bolt carrier key broke clean today after 10 rounds. Called them, but since it was not serialized part and I traded that with another Calgunner, no warranty for me...
I used all PSA kit minus lower.
Any recommendations for repair/replacement from the experts?

Hey,

I had the same failure - read here:

http://www.calguns.net/calgunforum/showthread.php?t=1152141

A new Grade 8 bolt from Ace, some Loctite, staked, and I've been fine for another 500 rounds so far. I think these uppers had loose screws in some cases.

Been pretty happy with the kit, for the price. It's a fun setup.

[jviz4u]

Hey,

I had the same failure - read here:

http://www.calguns.net/calgunforum/showthread.php?t=1152141

A new Grade 8 bolt from Ace, some Loctite, staked, and I've been fine for another 500 rounds so far. I think these uppers had loose screws in some cases.

Been pretty happy with the kit, for the price. It's a fun setup.

Thanks a lot for the tip. Now i just need to figure how to remove broken stub.

[V8MERC124]

I have a psa upper and mag block Im working on. I will be using modified uzi mags instead. I will be documenting it and making videos too.
Do you guys, with the psa bolts, think I should replace the "gas key" screws with grade 8 cap screw or just leave it? I really dont want to have to drill out a broken screw...

[lone shooter]

Hey,

I had the same failure - read here:

http://www.calguns.net/calgunforum/showthread.php?t=1152141

A new Grade 8 bolt from Ace, some Loctite, staked, and I've been fine for another 500 rounds so far. I think these uppers had loose screws in some cases.

Been pretty happy with the kit, for the price. It's a fun setup.

I think I'm going to be proactive and just replace mine. So a 1/4-20 by 1/4" long screw is the perfect fit?

[Dezrat]

I think I'm going to be proactive and just replace mine. So a 1/4-20 by 1/4" long screw is the perfect fit?

Pretty sure that's an 8-32 cap screw, not 1/4-20.

[dvs762]

I used a 80% to make this one from a Colt SMG kit. All Colt except the lower and buffer tube and blade and PSA Magblock



This one is on a Hi-Standard lower with a Colt 9mm Carbine kit with a 9mm A2 ish muzzle break and A1 stock.PSA Magblock