Floydieguns

Exactly why I went to the 10oz weight. Got adjustable gas key for intent that eventually, will change for 6.5 to 8.5oz buffer and semi-permanently affix different suppressor. Just looking for various insight. Mostly what has been previously documented. Am pretty confident in which routes to pick. The 5oz buffer was originally functioning fine.

I thank you all again. It is the adjustable gas key from RCA, a standard .750 melonite gasblock. I will look into it this weekend. What is an ideal specification on gas port? Specifically, the "ideal" port diameter in barrel. I have a 5.5oz dpms rifle buffer that can be used in place. Most certainly will function as intended when changed out. If I recall, when playing with shortened barrels on FAL.. the larger port meant more volume, less pressure. Smaller port was less volume and greater pressure. Will have to dig through my spec books.. believe that .088" was just a tad small. Ideal was near .096" with sometimes .110" on the very short barrels. Of course, this was crucially affected by the op rod length. This is a cross comparison, for comparison only. Please understand that. I am only mentioning this for descriptive purposes. This stated, ideal specifications please? This is a nitrided barrel. Not very keen on running HSS drill bits down the bore just yet. For any less experienced gunsmith, I recommend avoiding carbide. When it snaps.. you are in a world of hurt for removing it. Let me blueprint everything before wasting bits and swear words.

It is using a 10oz weight currently. I would have to do a partial breakdown, though I am guessing the port was larger than .09" - it has been a while since assembly. It was not "abnormal" in any way. At the time, I purchased two 18" hybrid contour barrels from criterion. Both were visually identicle. Also, I am fairly certain the block is not mis-clocked. I use a fine sharpie to denote the centerlines of barrel port and gasblock port in addition to measuring the depth of bore from gasblock outer edge to barrel shoulder. Everything lined out within .005" or so. I went over that a few times. I truly believe it is the heavy buffer plus factory munitions. Will inspect in a week or two. Busy currently. Any other inputs or concerns are gratefully welcomed. Appreciated much. Floydie

Robocop, it is a deadair sandman QD. I only use the brake with the can. For reasons mentioned above. JT, I am looking at the UBR2. Consideration was given to h1 and tubbs spring. However, concern about too low of resistance is present. Looking to sustain the longest duration in lockup as possible. Suspect that h3 or even the slash heavy buffer for ar15 carbine would help keep things happy. Yet, this again tips scales. Trying to keep total weight under 16lbs with full magazine/suppressor. This all disclosed.. There is another suppressor in the works, which is intended for a more permanent use on this rifle. Appreciate the both of you. Floydie

The gas is kept completely open. Adjustable key was installed and used while testing the suppressor's recoil reduction capabilities. Had figured as much, with the brake. Thought was, perhaps it would add enough forward momentum during the "recoil reduction" outgas.. allowing the bcg a more rapid unlock. Seems the 10oz weight causes such a dwell, the pressure has decayed beyond useful range. Enough to feed properly in most instances yet, not enough for hold open to engage. Have not tried, because I hate those obnoxious boom devices. Makes me go from earplugs to over-ear muffs. Which make for a pain with cheekweld. Darn it, why is it such a difficult thing about having cake while eating it too?? Humor aside; Was guessing the tubbs spring and h3 buffer in a5 tube would give similar results as a standard rifle buffer and tubbs spring. Granted the slightly shorter tube will give a greater amount of spring load at battery(just a bit more compressed than in a2 receiver extension).. I was more or less hoping to find information from people who are using their rifles suppressed. What is the lowest weight they use, etcetera. Thank you!

Sorry for doubling. To clarify, as during a re-read.. my subject is not very collected. Does anyone feel using a muzzle brake will help correct the potential short stroke and guaranteed fail to hold open? In current configuration. When hosting my suppressor, there are zero issues. Directly, my light hearing protection dislikes the brake/comp. For some reason a target crown sans brake has less report for my ears. I had intent of using a more low-mass buffer and more stiff action spring in combination to the adjusting gas key. Simply due to the weight bias of most collapsing stocks. What experience do you all have with the ar15 carbine buffer weights in a5 tubes? I was thinking h3 being 5oz with a tubbs spring should be heavy enough, yet not change the overall weight of rifle too much. I am already aware the weight of rifle complete will increase. Yet, I am concerned about using the h1 or even 'taccom' buffers. Before spending money, would like insight from any others who have walked down this path.

Hello, new here. Built ar308. Have 2000 rounds fired. Parts are to correct dimensions. No abnormal wear. Have assembled roughly twelve various ar's. Was recommended to use the 10oz heavy buffer from slash as rifle primary hosts suppressor. Functions flawlessly with can. Without can.. On factory munition can randomly short stroke and never holds bolt back. Using 168 or 175smk off the Dillon versus 150gr box, has no issue with short stroking. Before I change to a5 tube with h3 buffer and tubbs spring, does muzzle device truly help? Either use thread protector or suppressor. No brake ever. Looking for inputs. Contemplating RCA adjusting gas key with the h2 or h3 carbine buffer and tubbs spring. With 10oz A2 weight and standard coil spring - rifle runs like a velvet dream while hosting. Already have the gaskey installed. Can pile brass 3ft away with kick similar to my 5.56 builds when suppressed. Goal is improving non-suppressed function and using adjustable buttpiece. When weather changes, so does ideal L.O.P Thanks, Floydie