Shentile Posted January 9, 2019 Report Share Posted January 9, 2019 (edited) Hello all, New member here with a question for the community on a lightweight build I'm having issues with. The details are below if anyone can provide any insight. Thank you in advance for your assistance. Rifle chambers the first round from a magazine, when trigger is pulled it just clicks and does not fire. If I then lock the bolt to the rear, drop the magazine, ride the bolt back forward and fire, that same round will fire without issue but the casing will not eject. I've already tried disassembling the bolt carrier group and bolt and re-assembling as well as disassembling and re-assembling the bolt catch thinking it may be bolt catch interference. Any help is appreciated. Stephen Edited January 9, 2019 by Shentile Quote Link to comment Share on other sites More sharing options...
Armed Eye Doc Posted January 9, 2019 Report Share Posted January 9, 2019 What are the details of the gun? Parts list, if assembled (which it sounds like) or was it a complete gun? Welcome to the forum. Quote Link to comment Share on other sites More sharing options...
Shentile Posted January 9, 2019 Author Report Share Posted January 9, 2019 Thanks for the reply, parts list is as follows: Receiver set: Battle Arms Development BAD762 Barrel: Faxon Firearms 18" Pencil Barrel Muzzle Device: V7 Weapon Systems Titanium Brake BCG: V7 Weapon Systems Titanium BCG Bolt: Faxon Firearms .308 Bolt Handguard: Battle Arms Development 15" 308 Handguard Gas Block: Supuraltive Arms Adjustable Gas Block Grip and Buttstock: Daniel Defense Everything else is DPMS or a variant of DPMS parts (buffer tube, spring, buffer etc.) Quote Link to comment Share on other sites More sharing options...
Shentile Posted January 9, 2019 Author Report Share Posted January 9, 2019 Forgot mag release, and bolt catch which are both Battle Arms Development And trigger which is CMC Trigger flat trigger. Quote Link to comment Share on other sites More sharing options...
unforgiven Posted January 9, 2019 Report Share Posted January 9, 2019 Interesting group of parts brother. How many rifles have you assembled ? Quote Link to comment Share on other sites More sharing options...
Shentile Posted January 9, 2019 Author Report Share Posted January 9, 2019 This is my fifth, never had any issues aside from over/under gassing which were easily resolved. Quote Link to comment Share on other sites More sharing options...
unforgiven Posted January 9, 2019 Report Share Posted January 9, 2019 There have been others that have stopped by with a nice pile of parts for a first build. Lol Quote Link to comment Share on other sites More sharing options...
Shentile Posted January 9, 2019 Author Report Share Posted January 9, 2019 Haha, this is my second AR 308 and fifth total rifle (the other three being AR-15 variants). If anyone has any ideas as to what might be malfunctioning I would appreciate it because my buddies and I have all used our Army math and can't find the answer. Quote Link to comment Share on other sites More sharing options...
Matt.Cross Posted January 9, 2019 Report Share Posted January 9, 2019 Just now, Shentile said: Haha, this is my second AR 308 and fifth total rifle (the other three being AR-15 variants). If anyone has any ideas as to what might be malfunctioning I would appreciate it because my buddies and I have all used our Army math and can't find the answer. There are multiple potential issues; 1. Lubricant; this platform needs lots of it in the upper receiver when new. Lots! 2. Tight new components, and/or a tight chamber. Lubricant takes care of the first, polishing your chamber takes care of the latter. 3. With the first two issues remedied, begin looking at your mags for potential issues, and if mags aren't the problem, try a trigger that's known to be reliable on this platform. That's where I would personally begin. Quote Link to comment Share on other sites More sharing options...
Shentile Posted January 9, 2019 Author Report Share Posted January 9, 2019 Thanks Matt.Cross! I'll lube her up good and see if that fixes it. Is there a trigger that you would recommend over CMC for a 308 build or just have found that CMC is unreliable? Quote Link to comment Share on other sites More sharing options...
Matt.Cross Posted January 9, 2019 Report Share Posted January 9, 2019 1 minute ago, Shentile said: Thanks Matt.Cross! I'll lube her up good and see if that fixes it. Is there a trigger that you would recommend over CMC for a 308 build or just have found that CMC is unreliable? I can't say that either is specifically the case, but CMC triggers are less common on this platform. The idea is only to rule it out as a cause, if it isn't contributing to the issues, then by all means use it. I'm only suggesting that a trigger with a good large AR track record can help eliminate potential issues. My feeling is that the CMC is fine and your issues are coming from a tight chamber and all-new parts, possibly compounded by mag issues. That's why I put ruling out the trigger last. ? Quote Link to comment Share on other sites More sharing options...
Matt.Cross Posted January 9, 2019 Report Share Posted January 9, 2019 Just now, Matt.Cross said: I can't say that either is specifically the case, but CMC triggers are less common on this platform. The idea is only to rule it out as a cause, if it isn't contributing to the issues, then by all means use it. I'm only suggesting that a trigger with a good large AR track record can help eliminate potential issues. My feeling is that the CMC is fine and your issues are coming from a tight chamber and all-new parts, possibly compounded by mag issues. That's why I put ruling out the trigger last. ? In any case, the Geisselle SSA-E has a good track record and regularly goes on sale at PSA. Quote Link to comment Share on other sites More sharing options...
Shentile Posted January 9, 2019 Author Report Share Posted January 9, 2019 1 minute ago, Matt.Cross said: In any case, the Geisselle SSA-E has a good track record and regularly goes on sale at PSA. 3 minutes ago, Matt.Cross said: I can't say that either is specifically the case, but CMC triggers are less common on this platform. The idea is only to rule it out as a cause, if it isn't contributing to the issues, then by all means use it. I'm only suggesting that a trigger with a good large AR track record can help eliminate potential issues. My feeling is that the CMC is fine and your issues are coming from a tight chamber and all-new parts, possibly compounded by mag issues. That's why I put ruling out the trigger last. ? Thanks! Appreciate all of the info, I'll post back on here what ended up working in case anyone has a similar issue in the future. Quote Link to comment Share on other sites More sharing options...
edgecrusher Posted January 9, 2019 Report Share Posted January 9, 2019 Rough chamber maybe? Also I’d go with new parts mating together and under lubricated Quote Link to comment Share on other sites More sharing options...
98Z5V Posted January 10, 2019 Report Share Posted January 10, 2019 Nope, nope, nope. Get into the details on that recoil system, DPMS. Everything else is first-rate parts. That recoil system is what's causing the problems here. Sounds like it's an AR15 recoil system, complete, from the conditions listed. Quote Link to comment Share on other sites More sharing options...
98Z5V Posted January 10, 2019 Report Share Posted January 10, 2019 1. Is it a rifle recoil system or a carbine recoil system? 2. How long is the buffer? 3. What is the internal depth of the receiver extension? - stick a tape measure down there, and see how deep that extension is. Quote Link to comment Share on other sites More sharing options...
Shentile Posted January 10, 2019 Author Report Share Posted January 10, 2019 18 hours ago, 98Z5V said: 1. Is it a rifle recoil system or a carbine recoil system? 2. How long is the buffer? 3. What is the internal depth of the receiver extension? - stick a tape measure down there, and see how deep that extension is. 1. Carbine length 2. 2.5" 3.8 oz. 3. 6 15/16" If this may be the issue do you have a buffer/spring/tube recommendation for a lightweight .308 build? Thanks for the input! Quote Link to comment Share on other sites More sharing options...
Matt.Cross Posted January 10, 2019 Report Share Posted January 10, 2019 I'm pretty sure the 16 + 15/16" is a typo. We'll correct that with your actual measurements @Shentile , no problem. Quote Link to comment Share on other sites More sharing options...
Shentile Posted January 10, 2019 Author Report Share Posted January 10, 2019 8 minutes ago, Matt.Cross said: I'm pretty sure the 16 + 15/16" is a typo. We'll correct that with your actual measurements @Shentile , no problem. Lol my apologies, I'm at work and fat fingered it, i meant 6 15/16" but this is just an educated guess of the manufacturers website because I haven't gotten a chance to go home and measure yet. Quote Link to comment Share on other sites More sharing options...
Matt.Cross Posted January 10, 2019 Report Share Posted January 10, 2019 2 minutes ago, Shentile said: Lol my apologies, I'm at work and fat fingered it, i meant 6 15/16" but this is just an educated guess of the manufacturers website because I haven't gotten a chance to go home and measure yet. No problem at all. The editing issue can be frustrating, just wanted to let you know we got your back where the editing is concerned. Quote Link to comment Share on other sites More sharing options...
Armed Eye Doc Posted January 11, 2019 Report Share Posted January 11, 2019 2 hours ago, Shentile said: Lol my apologies, I'm at work and fat fingered it, i meant 6 15/16" but this is just an educated guess of the manufacturers website because I haven't gotten a chance to go home and measure yet. Most of us have fat fingers as well. But a measurement of your actual receiver extension is needed. Some manufacturers, even well known ones, think that getting close is good enough. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.