Just finished my first AR15 build and need some help dealing with short stroking. I have done a fair amount of online research and have done extensive troubleshooting including switching ammo, switching mags, realignment of the gas block and swapping upper and lower with a buddies AR. I have narrowed the issue down to being in the upper and not an issue in the BCG. I finally have gotten to the point where 9 of 10 times it will feed the next round, but it still only engages the bolt catch on the first round out of a clean and freshly lubed action.
The fun is a bit of a Fraken-rifle. Here's a list of the components I used:
- bushmaster lower (stripped), upper and BCG
- carbine buffer tube, spring and buffer
- Voodoo Innovations EVO ultralight 16" barrel, 5.56, mid-length
- VLTOR .625 low profile clamp on gas block
- Spikes Tactical gas tube
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