Jump to content


Photo
- - - - -

replacing the factory fire control group


  • Please log in to reply
4 replies to this topic

#1 jeepranch

jeepranch

    Advanced Member

  • Contributor
  • PipPip
  • 421 posts

Posted 06 June 2013 - 06:22 AM

I looked for discussion of this, but so far Ive come up empty handed.  Pulled the V12 apart today to put in the G2 and to my surprise the factory FCG is a new animal Ive not seen before.  What is the extra piece that is next to the hammer, and do I need it in the G2?  no one seems to mention it.

 

thanks



#2 ShadyVepr

ShadyVepr

    Member

  • Member
  • Pip
  • 87 posts

Posted 06 June 2013 - 06:26 AM

the only think I can think of is its the bolt hold open.

 

if its on the right side if you are looking from the buttstock to the barrel. and it goes from in front of the hammer to a button/lever by the trigger.



#3 S-12 Pauly

S-12 Pauly

    Top Member

  • Contributor
  • PipPipPipPipPip
  • 5,863 posts
  • Gender:Male
  • Location:Salem Oregon

Posted 06 June 2013 - 07:01 AM

That other piece is the overtravel limiter.
You can mill the right side of the Tapco disconnector down and make it work, or just go with the stock Tapco.
If you try to re-use it, fit it properly so everything moves freely, and you have decent disconnector engagement, because the tip of Tapco disconnectors will eventually wear down a touch after several thousand rounds of powerful ammo, and if it's not good engagement to begin with, when it wears down, eventually the hammer will not be caught and will follow the carrier, bolt, and FP back up into battery..... Not. Good. and I've seen some who really should know better screw up on that aspect.
 

That being said, in the V-12, you really need to profile the Tapco Hammer down to .0555" when measured perpendicular to the hammer face with calipers over the "O" in the word Tapco, which is molded onto the side of the hammer.

(I didn't touch on the bump, or axis length, as those aspects should, by now be common knowledge, but just for shits & grins... No front bump, and hammer axis at 1.01" for accommodation of the V-12's LRBHO)

 

God bless, & good luck.
Pauly


Not molesting children, since 1978.


#4 jeepranch

jeepranch

    Advanced Member

  • Contributor
  • PipPip
  • 421 posts

Posted 06 June 2013 - 07:20 PM

That other piece is the overtravel limiter.
You can mill the right side of the Tapco disconnector down and make it work, or just go with the stock Tapco.
If you try to re-use it, fit it properly so everything moves freely, and you have decent disconnector engagement, because the tip of Tapco disconnectors will eventually wear down a touch after several thousand rounds of powerful ammo, and if it's not good engagement to begin with, when it wears down, eventually the hammer will not be caught and will follow the carrier, bolt, and FP back up into battery..... Not. Good. and I've seen some who really should know better screw up on that aspect.
 

That being said, in the V-12, you really need to profile the Tapco Hammer down to .0555" when measured perpendicular to the hammer face with calipers over the "O" in the word Tapco, which is molded onto the side of the hammer.

(I didn't touch on the bump, or axis length, as those aspects should, by now be common knowledge, but just for shits & grins... No front bump, and hammer axis at 1.01" for accommodation of the V-12's LRBHO)

 

God bless, & good luck.
Pauly

appreciate the info, got the FCG and hammer pulled.  The hammer looks like it was beat out of a piece of slag with an icepick, wow, never seen a crappier one



#5 DresNightfire

DresNightfire

    Advanced Member

  • Member
  • PipPip
  • 223 posts

Posted 06 June 2013 - 08:45 PM

 

That other piece is the overtravel limiter.
You can mill the right side of the Tapco disconnector down and make it work, or just go with the stock Tapco.
If you try to re-use it, fit it properly so everything moves freely, and you have decent disconnector engagement, because the tip of Tapco disconnectors will eventually wear down a touch after several thousand rounds of powerful ammo, and if it's not good engagement to begin with, when it wears down, eventually the hammer will not be caught and will follow the carrier, bolt, and FP back up into battery..... Not. Good. and I've seen some who really should know better screw up on that aspect.
 

That being said, in the V-12, you really need to profile the Tapco Hammer down to .0555" when measured perpendicular to the hammer face with calipers over the "O" in the word Tapco, which is molded onto the side of the hammer.

(I didn't touch on the bump, or axis length, as those aspects should, by now be common knowledge, but just for shits & grins... No front bump, and hammer axis at 1.01" for accommodation of the V-12's LRBHO)

 

God bless, & good luck.
Pauly

appreciate the info, got the FCG and hammer pulled.  The hammer looks like it was beat out of a piece of slag with an icepick, wow, never seen a crappier one

 

Yeah, I had a few instances where my factory trigger wasn't functioning during clay shoots, very embarrassing. After I threw in the g2, zero failures to date.


VEPR 12 | CSS GK-01 Muzzle Brake | TSS Modified G2 Trigger Group | Saiga 12 Recoil Spring | RAM Extended Mag Release | Tromix Bolt-on Knurled Charging Handle | Bonesteel Left AR folder | Magpul STR w/ Enhanced Extended Buttpad | Custom Stippled Hand Guard | Primary Arms Micro Red Dot





0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users