On a project to build a PCC from scratch. Need Technical Support

[gahunter12]

Here’s my QC10 build. It has been one sweet shooting PCC. The balance is unbelievable. 

Receiver set: QC10 Glock Mags

Barrel: JP 16”

BCG: Surmount Defense Arc

Trigger: Elftman Tactical Match AR10/308

LPK: BCM

Buffer: QC10 Adj 9mm buffer

Buffer Spring: Springco Red carbine length spring

Rec Extension: Strike Indust Enhanced Anti tilt

Stock: Strike Indus Viper

Ch Hndl: Strike Indus Ext latch

Hand Guard: Tacoma Carbon Fiber

Break: Tacoma small

Selector Swich: Strike Indus Flip Switch

Red Dot: Atibal MCRD2

Mags: Glock Factory 33rnd

Basepads: TF +10

 

 

[gahunter12]

[SeattleDude]

Then only issue I had is running my setup with JHP bullets. they would hit low and Jam. Going to RN solved all the issues.

[MikieM]

15 hours ago, SeattleDude said:

Then only issue I had is running my setup with JHP bullets. they would hit low and Jam. Going to RN solved all the issues.

 

I hear you. I tried seating the RN bullets backwards. Not only did I want to see if they would feed correctly, I figured they'd cut a really nice hole in the target.

Edited December 13, 2017 by MikieM

[L9X25]

Your magazine is the item that determines the elevation and direction that your bullet feeds.  With round nose bullets all that you need is to have more of the bullet going into the chamber than out.  If you go to JHP or FP you need to have most or almost all of the bullet going into the chamber to get a clean feed.  Feed ramps help with low feeds, but do nothing if the bullet is left or right.  The bolt only pushed the bullet forward.

[Les Snyder]

some thoughts  as GaHunter commented about balance... I guess the trend is to make the front end as lightweight as possible when using a carbine stock... the less expensive way is to use a heavier full rear stock ... I prefer an A1... the platform, even with reduced 9mm loads is still a blow back ( unless you have a chamber ring delay or DI), and you need to find a balance, both in weight and maneuverability ...and some way to use up some of that momentum...

 

my PCC is considerably less sophisticated, and somewhat less expensive... New Frontier Glock lower, Palmetto State upper, bolt, and fore end (currently with a Mas Defense barrel)... McDonald Precision brake... Enidine hydraulic buffer (5.56 rifle)  stock rifle spring,.. Rock River NM trigger...Vortex SPARC II dot

 

of course L9x25 beats me like a drum at the matches

[stick]

Matching Upper & Lower (compatible with Glock Magazines) Quarter Circle

-Charging Handle Radian Raptor

-Bolt Carrier JP 9mm enhanced

-Trigger Hiperfire 24C

-Safeties Dependent on preference

-Small Parts Kit Aero Precision

-Stock Magpul ACS-L

-Buffer Spring Set-up JP 308 Silent Buffer system

-Buffer Tube-Carbine

-Barrel Taccom 16" sleeved feed ramp barrel

-Muzzle Break-Dependent on preference (Birdcage, Taccom, Titan)

-Hand Guard Taccom or Cobratac carbon fiber

-Scope C-more Railway with 6 or 8 moa dot

-Magazines (Glock for 31 rounds) Glock 31 round

-Magazine Extension (Extension to 41 rounds) Taylor Freelance PCC

Edited December 13, 2017 by stick

[L9X25]

1 hour ago, stick said:

Matching Upper & Lower (compatible with Glock Magazines) Quarter Circle

-Charging Handle Radian Raptor

-Bolt Carrier JP 9mm enhanced

-Trigger Hiperfire 24C

-Safeties Dependent on preference

-Small Parts Kit Aero Precision

-Stock Magpul ACS-L

-Buffer Spring Set-up JP 308 Silent Buffer system

-Buffer Tube-Carbine

-Barrel Taccom 16" sleeved feed ramp barrel

-Muzzle Break-Dependent on preference (Birdcage, Taccom, Titan)

-Hand Guard Taccom or Cobratac carbon fiber

-Scope C-more Railway with 6 or 8 moa dot

-Magazines (Glock for 31 rounds) Glock 31 round

-Magazine Extension (Extension to 41 rounds) Taylor Freelance PCC

 How did you get the JP Bolt to work with the Taccom ramped barrel? 

 

Did you cut the bolt or the barrel ramp?

[stick]

2 hours ago, L9X25 said:

 How did you get the JP Bolt to work with the Taccom ramped barrel? 

 

Did you cut the bolt or the barrel ramp?

I guess I need to change the bolt to the taccom 9mm enhanced bolt.

[L9X25]

29 minutes ago, stick said:

I guess I need to change the bolt to the taccom 9mm enhanced bolt.

 

Yes, the Taccom bolt works well with ramped and un-ramped barrels, but the JP (and the majority of the others) will interfere with the ramp. 

 

 

 

 

[stick]

5 hours ago, L9X25 said:

 

Yes, the Taccom bolt works well with ramped and un-ramped barrels, but the JP (and the majority of the others) will interfere with the ramp. 

 

 

 

 

Thank you for the info!

[MikieM]

14 hours ago, MikieM said:

 

I hear you. I tried seating the RN bullets backwards. Not only did I want to see if they would feed correctly, I figured they'd cut a really nice hole in the target.

 

Is no one going to ask me how this turned out?

[noexcuses]

11 hours ago, L9X25 said:

 

Yes, the Taccom bolt works well with ramped and un-ramped barrels, but the JP (and the majority of the others) will interfere with the ramp. 

 

 

 

 

Just need to do a modification to the bolt face and they will work with ramped barrels. Only took a few minutes with a dremal. 

[noexcuses]

5 hours ago, MikieM said:

 

Is no one going to ask me how this turned out?

had a full wadcutter lol

[MikieM]

2 hours ago, noexcuses said:

had a full wadcutter lol

 

No, I shot myself. Get it? I seated the bullet in the wrong direction, and shot myself.

Man! Tough crowd. 

[L9X25]

3 hours ago, MikieM said:

 

No, I shot myself. Get it? I seated the bullet in the wrong direction, and shot myself.

Man! Tough crowd. 

 

That explains the broken firing pin, mystery solved! ;-)

[L9X25]

5 hours ago, noexcuses said:

Just need to do a modification to the bolt face and they will work with ramped barrels. Only took a few minutes with a dremal. 

 

I would love to see a pic of the finished product.

 

My JP bolt has never had a malfunction, so I did not want to modify it and risk damaging the reliability.

So far the Taccom bolt has been perfect too.

[noexcuses]

4 hours ago, L9X25 said:

 

I would love to see a pic of the finished product.

 

 

 

from Taccom's web site, I also had to grind down that triangle looking area just to the left of the circled area. Was a jamomatic till I did that. I cold see the rounds hanging up on that spot. I am using a KAW bolt with Tim's ramped ULW barrels. Actually used a 6" grinder with cutoff wheel on the circled area and a dremel on the little triangle area. 

[Joeg26er]

@gahunter12

nice build what was the total cost?