AK Barrel populating: Do these diameters look right?

[ArchStanton]

I'm about to meet with a gunsmith tomorrow to get my Bulgy AK74 barrel populated. The barrel and trunnion are non-matching. I had some time so I busted out the 'ol dial calipers and did some measuring. Excuse the nerdiness. It's my first build and I'm quite excited.



ID (Barrel OD) [Difference]

Front trunnion
0.866 (0.869) [0.003]

Rear sight block
0.690 (0.692) [0.002]

Gas Block
0.590 (0.592) [0.002]

Front Sight Block
0.572 (0.573) [0.001]

Does all this look good to go?

[WTSGDYBBR]

They all very from size

I'm about to meet with a gunsmith tomorrow to get my Bulgy AK74 barrel populated. The barrel and trunnion are non-matching. I had some time so I busted out the 'ol dial calipers and did some measuring. Excuse the nerdiness. It's my first build and I'm quite excited.



ID (Barrel OD) [Difference]

Front trunnion
0.866 (0.869) [0.003]

Rear sight block
0.690 (0.692) [0.002]

Gas Block
0.590 (0.592) [0.002]

Front Sight Block
0.572 (0.573) [0.001]

Does all this look good to go?

[ArchStanton]

They all very from size

Doh! I should have been more clear. I just wanted to be sure the variances are within acceptable limits.

Thanks!

[ott1]

The barrel OD might be a tad too tight for press fit at the trunnion. Best is 0.0015 to 0.002".

[Ryan in SD]

Indeed, overall looks good though. All press-able.

[Ryan in SD]

Indeed, overall looks good though. All press-able.