Building a Hybrid Yugoslav M70B1 from a Stub with Screws

Building a Hybrid Yugoslav M70B1 from a Stub with Screws

George Spafford is building a replica of the Yugo M70B rifle using a stub parts kit. A new installment will appear here every Friday

Part 10 Removing the Barrel

Driving out the barrel pin with a 4X air riveter. There are plenty of guys who use hammers and punches or 12-20 ton presses. The point is that there are many ways to remove the pin.


Despite what you may read on the web, even though the kit will be assembled with screws, take the time to remove the barrel from the front stub. Some people assemble AKs by drilling blind holes in the trunnion without removing the barrel and then tapping those holes with bottoming taps. Plainly put, I do not recommend this method, as it is too easy to drill into the barrel or snap off a tap.


There are a number of commercial barrel press jigs on the market that you can use with a 12-20 ton press to push out the barrel pin and then the barrel. I used one from AK-Builder for years.


I have also used hammers, punches & air hammers. The photo shows me driving out the M70's pin with a 4x Ingersoll-Rand air hammer/riveter, and this is my preferred method now unless I find a real stubborn pin. Then I use my 20-ton press and the AK-Builder jig. Note, if you want to go the air tool route, it pays to have a regulator and an air tools with a tickle trigger. Driving out a pin with a cheap air hammer whose trigger is either all on or all off is difficult and you may wind up marring the surrounding metal.

There have been plenty of stories on the gun boards of guys drilling into the barrel or snapping taps. It really isn't that hard to remove the barrel—play it safe and remove the barrel.

Once the pin has been pressed out, the barrel can be driven out. I use an AK-Builder jig normally but have also done this with a copper washer protecting the chamber and then used a hammer and large punch to drive the barrel out.


Here, the barrel has been pressed out. For comparison, a Hungarian trunnion is on the left and the trimmed to length stub is on the right.

Recommended for You

This will be the first of many investigative reports about the NRA by Firearms News. 2nd Amendment

Firearms News Investigates the NRA: Part 1

Nedd Scott - July 18, 2019

This will be the first of many investigative reports about the NRA by Firearms News.

The Soviet short sword of World War II was the Pistolet Pulyemet Shpagin-1941 (PPSh-41) submachine gun. Rifles

Shooting the Soviet 7.62x25mm PPSh-41 Submachine Gun

David M. Fortier - July 11, 2019

The Soviet short sword of World War II was the Pistolet Pulyemet Shpagin-1941 (PPSh-41)...

CRKT makes 17 different knife models exclusively for Ruger, from fixed hunting knives to tactical folders, and many of their models are offered in several different styles. Accessories

Ruger CRKT Knives Review

James Tarr - July 08, 2019

CRKT makes 17 different knife models exclusively for Ruger, from fixed hunting knives to...

See More Recommendations

Popular Videos

The GPO Rangeguide 10x50

The GPO Rangeguide 10x50

If you need to see your game, and know the distance in all hunting environments, the GPO RANGEGUIDE 10×50 is your winning ticket.

M134 Mini-Gun

M134 Mini-Gun

While filming the 2018 season of Guns&AmmoTV we had the unique opportunity to fire the M134 Minigun.

Shooting the 20mm Lahti

Shooting the 20mm Lahti

David Fortier had the chance to fire the Lahti L-39 while filming the 2018 season of Guns&AmmoTV while on location at DriveTanks.com.

See more Popular Videos

Trending Stories

No one can restore receptivity to another Trump term with these disaffected gun owners but the president himself. 2nd Amendment

2020 is Trump's to Blow with Gun Owners

David Codrea - July 09, 2019

No one can restore receptivity to another Trump term with these disaffected gun owners but the...

CRKT makes 17 different knife models exclusively for Ruger, from fixed hunting knives to tactical folders, and many of their models are offered in several different styles. Accessories

Ruger CRKT Knives Review

James Tarr - July 08, 2019

CRKT makes 17 different knife models exclusively for Ruger, from fixed hunting knives to...

This will be the first of many investigative reports about the NRA by Firearms News. 2nd Amendment

Firearms News Investigates the NRA: Part 1

Nedd Scott - July 18, 2019

This will be the first of many investigative reports about the NRA by Firearms News.

See More Stories

More Gunsmithing

There are two ways to go when purchasing tools: heavy duty professional grade for daily use or Gunsmithing

Industrial Grade AR Tools

Gus Norcross - March 10, 2014

There are two ways to go when purchasing tools: heavy duty professional grade for daily use or

Manufactured by the famous Belgian gun works, Dumoulin, this action is a perfect platform for a Gunsmithing

Sarco's Dumoulin Large Ring Commercial Action

SGN Online Editors - April 14, 2014

Manufactured by the famous Belgian gun works, Dumoulin, this action is a perfect platform for...

In the second part of this series, we examine how to build the barrel assembly on an AR-15 varmint upper. Gunsmithing

Building a Heavy AR-15 Varmint Upper Part 2: Barrel Assembly

Gus Norcross - December 31, 2013

In the second part of this series, we examine how to build the barrel assembly on an AR-15...

See More Gunsmithing

GET THE MAGAZINE Subscribe & Save

Temporary Price Reduction.

SUBSCRIBE NOW

Give a Gift   |   Subscriber Services

PREVIEW OUR CURRENT ISSUE

GET THE NEWSLETTER Join the List and Never Miss a Thing.

×