Gas Block pin or set screw?

[travismxi]

so im new to building uppers and am taking a armoers class to learn soon. in the mean time i started ordering parts. I figured out this was a bad idea since i hadnt learned about building an upper yet. i oredered this barrel from PSA

http://palmettostatearmory.com/inde...ls/14-5/psa-14-7-hf-m4a1-5-56-1-7-barrel.html

after playing with it and putting a FSB on it i noticed their is no place to have the pins mount the FSB. I am guessing my only option is to get a set screw gas block? thanks guys.

 

[photoracer]

I don't remember ever seeing anything but set screw GBs or clamp ons (YHM). If you are setting up a barrel under 16", which will have to have the flash hider permenantly pinned, you should consider getting a clamp on GB so you can get all the parts mounted on the barrel off over the FH. Although if you are putting on a mil-spec handguard and A2 front sight you don't have to. If you would like an A2 front sight frame gas block I have one coming in early next week on a 14.5" barrel that I will be taking off and tossing in a box. I am putting one of these on because I want to use the Samson Evo handguard I have on what will be a suppressed carbine.

http://www.midwayusa.com/product/257276/yankee-hill-machine-gas-block-with-flip-up-hooded-front-sight-and-bottom-rail-bolt-on-mount-ar-15-lr-308-standard-barrel-750-inside-diameter-steel-matte

You could do one of these also:

http://www.midwayusa.com/product/798704/yankee-hill-machine-gas-block-2-picatinny-rail-ar-15-lr-308-standard-barrel-750-inside-diameter-steel-matte

Or I could sell you the A2 GB frame for next to nothing.

 

[travismxi]

thanks, the clamp on seems like the best idea. I can imagine the clamp on not being as secure and stable as a pinned SB, am i completley wrong here? My idea is to put somethign similar tot he daniel defense ris ii. i like the look of the FSB being in the middle of the quad rail. At my work we have all the tools to weld a pinned flash hider on to make it 16".

 

[Wojo]

Go with the pinned setup sir. I had the same dilemma with my first 300blk build...

Check out this thread...

http://www.mdshooters.com/showthread.php?t=98819&highlight=Gas+block+pin

 

[CSS]

The planning phase of my first upper build was a complete cluster f*&k. Ordered parts thinking it was going to be easy like the lower. Wrong. Unfortunately I had the same problem deciding which gb to go with. Finally got DD low pro clamp-on. I planned on just tightening it down and applying Rockset. Now that I've seen these threads I'm having second thoughts about that.

 

[travismxi]

so i am convinced i need the barrel drilled for pins. can any one recommend a good smith to do this in southern maryland/ dc metro area?

 

[Wojo]

The planning phase of my first upper build was a complete cluster f*&k. Ordered parts thinking it was going to be easy like the lower. Wrong. Unfortunately I had the same problem deciding which gb to go with. Finally got DD low pro clamp-on. I planned on just tightening it down and applying Rockset. Now that I've seen these threads I'm having second thoughts about that.

U know people that could help you RICHARD.

 

[CSS]

so i am convinced i need the barrel drilled for pins. can any one recommend a good smith to do this in southern maryland/ dc metro area?

http://www.mdshooters.com/showpost.php?p=1220301&postcount=4

 

[Wojo]

so i am convinced i need the barrel drilled for pins. can any one recommend a good smith to do this in southern maryland/ dc metro area?

Where in somd? West side or the wrong side?

 

[travismxi]

im willing to drive in tri county area but for your question im in newburg

 

[Wojo]

Call Curtis in the post above... He's way down in Nanjemoy, almost to the very end of rt 6. Call around mid-day, early afternoon.

 

[travismxi]

i think ill give the guy out in nanjemoy a call. spend alot of time down there

 

[Wojo]

He's more in Grayton or Riverside... Past Nanjemoy is you can imagine that. I'm a yocal local.

From ur profile pic, I'll bet I know why you know Nanjemoy

 

[CSS]

U know people that could help you RICHARD.

Yeah I thought I had it all figured out and got tired/lazy when it came to choosing the gas block so I just ordered the DD since I have mid DD barrel. Let it sit for a few days and started doing more research. That's how I ended up here. Frustrating and costing me more money, but at least I'm gaining knowledge. Yes, I know, ass backwards. I'll give you a call/text this weekend and wait for you to reply in two weeks...lol

 

[Wojo]

Yeah I thought I had it all figured out and got tired/lazy when it came to choosing the gas block so I just ordered the DD since I have mid DD barrel. Let it sit for a few days and started doing more research. That's how I ended up here. Frustrating and costing me more money, but at least I'm gaining knowledge. Yes, I know, ass backwards. I'll give you a call/text this weekend and wait for you to reply in two weeks...lol

You just got moved to my 3-4 week response list. Keep it up.

 

[travismxi]

yeah i have family off of bluff point off of tayloes neck where we hunt

 

[Wojo]

yeah i have family off of bluff point off of tayloes neck where we hunt

You know the area then. Curtis is a bit past Tayloes Neck... I think right by Benny Gray Point if I remember correct...

 

[travismxi]

ok thanks alot!

 

[travismxi]

any idea how much somethign like this cost?

 

[Wojo]

any idea how much somethign like this cost?

Rough guess... $80-$100... That may be high. Plus the $20 in gas to get down there and back to newburg. Make sure you fill up before u go down