Cleaning the 9mm AR Blowback

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Күн бұрын

Пікірлер: 26

@Blowback9 3 ай бұрын

For anyone interested... Firing pin retainer replacement pins: Stainless: davidsondefense.com/us-tactical-ind-enhanced-stainless-steel-mm-firing-pin-retainer-pack-65962.html Phosphate: davidsondefense.com/Omega-Mfg-AR-15-Phosphate-Machined-Firing-Pin-Retainer_p_14417.html

@dave_bob 3 ай бұрын

Just curious have you tried the Stealth Recoil System SRS-9 recoil spring? Its 20% off right now on their website.

@Blowback9 3 ай бұрын

@@dave_bobThe Armaspec? The 9mm version says it's only 6.4oz. equivalent (total weight of 9.5 includes not-reciprocating parts). Too light for most modern bolts to hit a 22oz. total weight goal. It may function in a 9mm but I wouldn't use it.

@dave_bob 3 ай бұрын

@@Blowback9 Yes that's the one, they claim actual weight is 9.5 oz, still might be a little light with the weight taken out of the bolt for function. I may try it out and see. I'm also going to try the tungsten pinewood derby weights for a carbine length GRS. I'm retired and have a machine shop .

@Blowback9 3 ай бұрын

@@dave_bob Must be nice to have a machine shop at your disposal! Just to be clear; the 9.5oz is not the weight to use in the reciprocating mass calculation (bolt+buffer mass). We need to use the equivalent mass - 6.4oz., then add the weight of the bolt with the bolt mass removed - usually 12oz. That's only 18.4oz. Very light! The mass of the guide rod parts and spring on the unit don't count, since that mass isn't adding to the bolt's inertia resistance to opening the breach.

@Blowback9 3 ай бұрын

@@dave_bob "Actual" weight is how much weight it adds to the gun. "Equivalent" weight is how much weight it adds to the bolt. "Equivalent" to using a 6.4oz. buffer. However, it's necessary to remove the 2.5oz.-ish bolt weight to use it. So it may really only act like a 3.9oz. buffer. That's not a little light, that's extremely light. This may explain it better: blowback9.wordpress.com/2021/10/27/captured-spring-systems-a-bad-idea-for-pcc/

@michael9r9rsBlasters 3 ай бұрын

Great video and great point about gloves! I'm not concerned about the cleaners as much as I am about the lead in firing residue, trying to keep those heavy metal levels as low as possible.

@skeetmanshooter 3 ай бұрын

Where are my Balistol brothers? Everyone has their method, I love my elcheapo sonic cleaner from Amazon.Thanks Doug, you’re done a fine job!

@jpay37 3 ай бұрын

Great video Doug - thanks for all you do for the blowback 9 community!

@bz8740 3 ай бұрын

Changing to the Maxim RDB solved my dirt issues. My AR9 hardly gets dirty, zero unburnt powder leftover. In fact its cleaner than my 5.56 ARs

@Blowback9 3 ай бұрын

Nice! It's very hard to charge compared to a regular buffer, but it definitely has benefits.

@bz8740 3 ай бұрын

@Blowback9 with my gun being a side charger its not that noticeable. I can see how on a rear charger it would be hard.

@JFon-ck6mg 3 ай бұрын

Awesome, needed this!

@johnnybalanay1052 3 ай бұрын

Where'd you get the foxtrot mike style pin you used to retain the firing pin?

@Blowback9 3 ай бұрын

davidsondefense.com/us-tactical-ind-enhanced-stainless-steel-mm-firing-pin-retainer-pack-65962.html

@oliverdeguzman7404 3 ай бұрын

Awesome tips Doug!!! May I ask what did you use for removing the buffer spring? The tool looks easy to use and remove the spring.

@ApoBeef 3 ай бұрын

It’s the tool from KAK Industries. You can download the STL and print it yourself.

@oliverdeguzman7404 3 ай бұрын

@@ApoBeef thanks!!! I just downloaded it!!

@timlyon2924 3 ай бұрын

@blowback9 what trigger is that?

@Blowback9 3 ай бұрын

AIM Surplus SSTAT. I always add anti-walk pins even though they say it's not required.

@timlyon2924 3 ай бұрын

@@Blowback9 I tried the CMC PCC trigger and it had a gritty and slow reset. I've sent it in to get fixed. If not I'll try that one.

@dave_bob 3 ай бұрын

Firearms need to be cleaned. You need to have a schedule that works for you and your weapons. My range toys are not going to be pristine, however they are going to work when the trigger is pulled.