RimfireCentral.com Forums - View Single Post - Garrow Firearms Development 17hmr locked bolt gas operated AR upper
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Old 09-21-2019, 11:18 AM

Join Date: 
Jul 2018
Los Angeles area
TPC Rating: 
100% (1)
Originally Posted by duckdvr26 View Post
So i picked up one of these uppers used. I'm having an issue when you charge the upper and feels like the bolt is catching on the trigger hammer. I have just a standard mil spec trigger installed. I end up removing the upper and the bolt snaps back normally. It's definitely catching on something. Emailed Garrow about this but no response.

On a side note when I unpacked the upper from shipping and I forgot about the buffer spring and it got tossed in the trash with the box. I have a carbine buffer spring installed right now. I do have the plastic buffer. Everything is installed per the manual. Thinking this may have something to do with my issue.

Wondering if anyone has had a similar issue with the bolt.
The Garrow spring is shorter than stock.
Try clipping a coils off (one at a time) and make sure your carbine buffer is installed backwards in the tube, then the spring and then the plastic buffer.

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