My ignorance is showing.

Plink50 · April 28, 2015, 07:38 AM

Recently I purchased parts to build an AR platform rifle in 5.56. I chose to utilize a hydraulic buffer but I tried to use the standard spring that came with the solid non hydraulic buffer. Now I can only open the bolt about half the way. Please let me know if there is a spring set made just for the hydraulic buffer or have I perhaps purchased the wrong buffer for the rifle?
Many Thanks,
An Amateur Builder
Richard Worley

Roughedge · April 28, 2015, 04:25 PM

Spring should be fine, check to see if something else is binding. How far did you take it down to change the buffer?

Scorpion8 · April 28, 2015, 05:44 PM

Make sure the two halves (upper and lower) are mated properly and the take-down pins properly inserted. Next see if you can remove the stock and buffer-tube extension, perhaps your buffer-retainer pin is protruding too high if the buffer tube wasn't screwed in to the right length. Be careful, it may fly off as you remove the buffer tube and buffer.

April 28, 2015, 07:38 AM	#1
Plink50 Junior Member Join Date: April 27, 2015 Location: Salem Posts: 2	My ignorance is showing. Recently I purchased parts to build an AR platform rifle in 5.56. I chose to utilize a hydraulic buffer but I tried to use the standard spring that came with the solid non hydraulic buffer. Now I can only open the bolt about half the way. Please let me know if there is a spring set made just for the hydraulic buffer or have I perhaps purchased the wrong buffer for the rifle? Many Thanks, An Amateur Builder Richard Worley

April 28, 2015, 04:25 PM	#2
Roughedge Senior Member Join Date: January 24, 2011 Location: Monroe,NC Posts: 669	Spring should be fine, check to see if something else is binding. How far did you take it down to change the buffer? __________________ The man that die's with the most stuff win's!

April 28, 2015, 05:44 PM	#3
Scorpion8 Senior Member Join Date: April 3, 2011 Location: SouthEast AK Posts: 117	Make sure the two halves (upper and lower) are mated properly and the take-down pins properly inserted. Next see if you can remove the stock and buffer-tube extension, perhaps your buffer-retainer pin is protruding too high if the buffer tube wasn't screwed in to the right length. Be careful, it may fly off as you remove the buffer tube and buffer. __________________ Retired USN Pain heals..... chicks dig scars......Glory, lasts forever!