Trying to knock this pin out (Factory Colt Sporter II HBAR upper), and it wont budge! I have it soaking in kroil right now. Any suggestions appreciated. Ive bent two pin punches not looking to bend anymore.

Are you using roll pin "starter" punches?

I know they aren't tapered, but you may find it'll start on one side easier than the other.

Be sure the FSB is well supported.

No am using standard pin punches. But at a higher quality than harbor freight type punches. Do they make hardened steel or tungsten punches?

eta

pretty sure FSB was well supported

Warm the FSB with a hand held torch and MAPP gas, support the FSB. Starrett punches and no tiny hammers.

Will give that a try too

thx

Don't just tap, tap, tap. A sharp, dedicated rap with at least a 12oz hammer and a good punch will break it loose

I have these, they work great.


Gas Block Pin Punch Set

The Geissele Gas Block Pin Punch Set is made specifically for the removal and installation of the 0.078" roll pin that secures the gas tube to the gas block of an AR-15/AR-10. Removal of a rusted-in gas block roll pin has always been a challenge since there are no commercial pin punches in 0.078" diameter. Additionally, 1/16" (0.062") punches have a tendency to bend and very few starter punches are available in 1/16" diameter.

The Geissele Gas Block Pin Punch Set makes gas block work a whole lot easier. The first punch to grab when removing the roll pin is the Starter Punch. This is the punch with the long, tapered end. The long taper is much more resistant to bending and buckling than the straight shank of the Pin Punch. Use the Starter Punch to get the roll pin moving. Then, use the Pin Punch to drive the roll pin out completely. The Geissele Gas Block Pin Punch Set is  made from properly hardened and tempered 01 tool steel.

SQUIRREL DADDY has one also.

No personal experience.

You have to stabilize the barrel 100% before you whack it