edteach

I really don't know, It was bought over a year ago and I really don't remember.

Pic of the inside of the buffer, I tapped the buffer aggressively on my vice and it did not budge.

I did take my buffer apart and the internals are either balls or rods and are pressed in not movable so that fix is out.

Thanks for all the help. I measured my tube and its 7.25 inches outside measurements, so if I need a 7 and 5/8s inside tube I will need to repalce the tube, buffer and spring. Here is a set up from Stag for my upper from stag but under specs it does not tell me much. https://www.stagarms.com/stag-10-carbine-receiver-extension-kit-stag300732.html

I checked my scale by putting a known test weigh that came with my digital scale for powder, It shows 3.52 oz. I put that weight on the scale and it shows 3 oz. So if anything my buffer is heavier than 3.8 oz. I would put it on my digital scale but its over what it will weigh. I am going to give this a try and if it does not function well I will trade them out.

This buffer seems to be running around the weigh I find many AR10s, I think I will run the gun to see how it works. If it feels at all funny I will go to a heavier spring and buffer.

I believe I have an AR15 Buffer in the tube. Its 4oz. So thanks for bringing it to my attention.

This is the lower I built and am hoping to fit the Stag upper to.

I believe it would be the A model. It takes the DPMS mags. I talked to a tech at Stag and he said that they recommend their lowers, but than said that it should work on my lower as all their AR10s are Armalite compatible.

I ended up going with Stag, they were the only ones who had stock. I bought the Stag 10 Tactical 16" Upper with Nitride Barrel in .308 - FDE - Left-Handed a LH BCG and Charging handle. I think I may have gotten one of the last ones as its not on their site anymore. Not sure how long things are BO now. But most places are out of stock on what I was looking for or they wanted 1800 for an upper.

I did they are out of stock of everything I need. Stag has in stock products.

I bought an AR10 Armalite lower a few years back and then all the stuff that ran up gun prices happened. I waited to see if prices would come down and they seem to be now. I need to build or buy an Armalite upper. I see Stag has them upper with BCG for 389 and would still need barrel, barrel nut, gas tube, hand guards. not sure what else I would need. Thanks for any help. I do have the Armalite not the DPMS lower.