Sar2 Conversion to Krinkov

[jroberts1968]

We took a SAR-2 and used it as a donor for a 1986 Tula AK74U build.
We wanted to reuse the original scope rail so we used the original rear trunnion rivet locations in the new trunnion. Interesting thing on this kit the gas block was partially drilled.

[jroberts1968]

[jroberts1968]

[SJgunguy24]

Looks good but what happens when that starts to key hole because you chopped down a 16" 1 in 8 twist barrel instead of using a 1 in 6 krink spec barrel?
I did the same thing using a Saiga for the donor gun. Kept the barrel at 16" but reprofiled it to fit the parts.

[chozenfew805]

[jroberts1968]

Looks good but what happens when that starts to key hole because you chopped down a 16" 1 in 8 twist barrel instead of using a 1 in 6 krink spec barrel?
I did the same thing using a Saiga for the donor gun. Kept the barrel at 16" but reprofiled it to fit the parts.

Russian / Bulgarian are 1/7 not 1/6. I have built over 40 tula Kits using
Bulgarian 74
Blue Jack V1 to current
US 74
Krebs 16 & 8 inch barrels
Saiga 5.45 as donors

I have had 1 krebs barrel keyhole as of yet.

Let me ask you this how many 5.45 16" barrels have YOU personally cut crowned shot and then found a key hole issue?

I also have read and talked to individuals that new the guy that had a friend that had a keyhole issue. I build them every day and have had the one from a krebs barrel. So I speak from personal experience and not from internet chatter.

Jim

Oh here is a little gift I did for a buddy

LK-09 7.5" US 5.45 Cut and Crowned Built on a flat ZERO keyhole. Experience vs. Chatter

http://www.youtube.com/watch?v=fscx5XbyQ20

[SJgunguy24]

Personally i've only chopped 5.45 barrels to 12.5" and they didn't keyhole. I had one guy bring his gun in that did keyhole and that was a bulgy barrel and was chopped. I installed a bluejack barrel and it was GTG. You have me beat with the Tulas, i've maybe 25-30 under my belt between the 2 shops I worked for.

[S470FM]

so jealous. very nice build. what receiver did you use? I have an 86 Tula kit and I'll be using a 16" virgin East German 5.45 bbl and 74ullc receiver.

[jroberts1968]

so jealous. very nice build. what receiver did you use? I have an 86 Tula kit and I'll be using a 16" virgin East German 5.45 bbl and 74ullc receiver.

Factory Receiver.

[SJgunguy24]

Russian / Bulgarian are 1/7 not 1/6. I have built over 40 tula Kits using
Bulgarian 74
Blue Jack V1 to current
US 74
Krebs 16 & 8 inch barrels
Saiga 5.45 as donors

I have had 1 krebs barrel keyhole as of yet.

Let me ask you this how many 5.45 16" barrels have YOU personally cut crowned shot and then found a key hole issue?

I also have read and talked to individuals that new the guy that had a friend that had a keyhole issue. I build them every day and have had the one from a krebs barrel. So I speak from personal experience and not from internet chatter.

Jim

Oh here is a little gift I did for a buddy

LK-09 7.5" US 5.45 Cut and Crowned Built on a flat ZERO keyhole. Experience vs. Chatter



http://www.youtube.com/watch?v=fscx5XbyQ20

Reminds me of this gun I built for my stepfather. Built from parts I had,laying around, a flat, and an old 5.45 barrel. I made the fake can and the top cover hinge and bracket.
Can't do the SBR thing in CA though.

Here you go. Built on a flat and the top cover is hinged. Kinda gives it that HK look.