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AR15.COM
7/8/2025 2:34:52 AM EDT
[Last Edit: LvFree][Edited]
Hello

This V7 Pro upper is fairy new, less than 300 rd.
Ejection pattern from Winchester 193 is 2:00, brass trace is only on the edge of the deflector next to the ejection port.
Ejection pattern from Weak Wolf 223 FMJ ( not steel case) is 2-3, but sometimes the bolt fails to lock at the last round. 

From 556, it seems the upper is overgassed. However, from weak 223, the upper is not overgassed but ejection pattern suggests that brass was ejected very late.

So either the bolt moves too fast due to overgas or ejection is too slow due to weak ejector/spring so the brass hit the edge of the ejection port.


Then I compared the bolt between V7 Pro and another one with good ejection from another complete 16 mid upper. the one with good ejection protrudes more.
The v7 Pro's ejector doesn't sit flush with the bolt lug. Does V7 Pro use a different ejection spring/ejector or any components (except barrel, muzzle, and gas tube) from V7? Or is this ejector/spring out of spec?

Thanks!

The left is the one with good ejection, and V7 Pro is the right one.

https://ibb.co/5XhJh4K5


https://ibb.co/tTGm6Tp9
7/8/2025 2:36:46 AM EDT
[#1]
FYI, the carbine lower uses Sprinco blue + H2, no suppressor.  That's why I suspected the barrel is over gassed originally with 556 before trying weak 223.
7/8/2025 2:19:14 PM EDT
[#2]
Please hit up our warranty team and they'll be happy to help you.

WARRANTY
Joe Marler
Daniel Defense
Law Enforcement Sales Manager
7/8/2025 10:07:05 PM EDT
[#3]
Thank you for the quick response, will do~

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