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Anyone who has tried to knock out a gas tube roll pin knows the pain. The pin that holds the gas tube to the gas block on an AR-15 or AR-10 is an oddball 0.078" diameter, and there just isn't a common punch made for it. Geissele built this kit to solve exactly that problem, giving you the right tools for a job that has frustrated builders for years.
The set includes two punches machined from properly hardened and tempered 01 tool steel. The first one you reach for is the starter punch, which has a long, tapered end. That taper resists bending and buckling far better than a straight shank, so it can break loose old, rusted, or stuck pins without folding over on you. Once the pin is moving, you switch to the matched 0.078" pin punch to drive it the rest of the way out. Standard 1/16" (0.062") punches tend to flex and bend when you try to use them here, which is why having the correct diameter tool matters so much.
This is the kind of tool that pays for itself the first time you swap or clock a gas block. Get the roll pin started with the tapered punch, then finish the job with the pin punch. It works for both removal and installation, so it earns a spot in any AR builder's or gunsmith's bench setup. Keep in mind these are consumable tools by design, and hard use will eventually wear them down like any quality punch.
If you build, tinker, or maintain AR-pattern rifles, this is one of those small kits that saves a lot of headaches. Geissele has a well-earned reputation for making quality gear, and this punch set is a good example of them solving a real-world problem the right way.
It is designed to remove and install the 0.078" roll pin that holds the gas tube to the gas block on AR-15 and AR-10 rifles. The kit includes a tapered starter punch to break the pin loose and a matched pin punch to drive it out. It is a go-to tool anytime you need to swap, clock, or service a gas block.
The gas tube roll pin is 0.078" in diameter, and there aren't commercial punches made for that exact size. Standard 1/16" (0.062") punches tend to bend and buckle when you try to use them on this pin. Having the correct diameter and a strong tapered starter makes the job cleaner and less frustrating.
Both punches are machined from properly hardened and tempered 01 tool steel with a black finish. The tapered starter punch is built to resist bending and buckling when dealing with old or rusted pins. That construction is what lets it handle stuck pins that would fold a lesser tool.
Yes, it is made for both the AR-15 and the AR-10 (also called AR-308) platforms. The gas tube roll pin size is the same across these rifles, so one kit covers both. That makes it a handy addition for anyone building or maintaining more than one AR pattern.
| UPC | 817953020005 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 15-172 |
| Quantity | 1 |
| Style | Punch |
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