[HKFanboy82]

So I have a Hk416 10.4" Upper and a MR556 Lower. Can I just merger the two and get a working gun? Do I have to change anything else out? I wanted double check with the community before I destroy something . Thanks!

 

[JNAP94]

So I have a Hk416 10.4" Upper and a MR556 Lower. Can I just merger the two and get a working gun? Do I have to change anything else out? I wanted double check with the community before I destroy something . Thanks!

Plug and Play!! Have several.. Do you have MR556 factory Fire Control Group in the lower still?

 

[HKFanboy82]

Plug and Play!! Have several.. Do you have MR556 factory Fire Control Group in the lower still?

Yes, everything on the MR556 is still factory. I was thinking that the buffer spring or trigger control group needs to be changes.

 

[JNAP94]

Yes, everything on the MR556 is still factory. I was thinking that the buffer spring or trigger control group needs to be changes.

It will run fine then!!

 

[HKFanboy82]

It will run fine then!!

Thanks!

 

[AGG-closed]

Presume you have a registered, SBR lower!!! :biggrin:

Tony

 

[Steve_in_29]

^^^^^ I could be wrong but I'm guessing no.

 

[ironmen]

Nice set up. All you have to do is attach the lower and you are ready to rock n roll

 

[JNAP94]

Presume you have a registered, SBR lower!!! :biggrin:

Tony

HA, Good Point, I should never assume.. LOL

P.S. Mine are registered SBRs!!