New build project - 2 duplicate MSRs

[Calculon]

Binary triggers

I mean test the rifles, not how good my lawyer is on a limited budget!

[Calculon]

Ok took the first rifle out to range today to shake it down a bit. Put 100 rds down range with no issues in cycling. The only round that didn't eject was when I turned gas block all the way down/closed to start tuning it in.

The only issue I had was with the bolt catch. With one mag (plastic but forget brand) bolt catch would work every time on empty mag. On 4 other mags (all steel Stoner AR mags) bolt catch would not engage. Did not have any other mags to try so I'll scare up a few others for next outing.
Any ideas what's going on? I did some research and keep coming up with bolt catch could be out of spec. What say you all?

BTW - I tried all 5 mags in another rifle when I got home. All 5 hold bolt back when empty.

[Pissed Off Patriot]

Did you ever find a faux suppressor?

Bullet Guy had them when I stopped at his place on Saturday.

[Calculon]

No faux suppressor but I put a thread protector on it.

[Calculon]

Replaced bolt catch spring and now gtg.

[SomeSoldier]

Curious have you thought about how your going to quantify the difference in improvement? Precision isn't always a 100% indicator of an upgrade. Maybe have a few of the same people come to the range with you at each equipment upgrade to give a broader test sample. Also it might be helpful at each upgrade post what you plan and we as a group could come up with good test parameters. Very interesting thread hope you follow up on it!

Plus don't tell them which was been upgraded. Let them tell you, rifle 1 or rifle 2 and whats better.

[Calculon]

Great idea.