Dueling 12.5's - build planning, ersatz-GL/SSC vs GAU-5 ASDW

[Diamondback]

Coming together nicely. Are you staying with the bare receiver extension?

For now, until we get a court ruling that shoves the impending brace-ban back up ATF's craplocker--for "discreet applications" I actually prefer the old fixed SBM4 over the adjustables because it can be turned into an onboard mag carrier with no added space cost, which you can't do with the adjustables because of the track and latch hardware.

Still wish I could find someone to develop a locking hinge coupler that'd work around the QRB with "pull back to unlock/flip/pull back and latch to lock" rather than still having to fut with "manual unlock then manual join"--the game here is to shave seconds off deployment time as much as possible.

[Disciple]

Still wish I could find someone to develop a locking hinge coupler that'd work around the QRB with "pull back to unlock/flip/pull back and latch to lock" rather than still having to fut with "manual unlock then manual join"--the game here is to shave seconds off deployment time as much as possible.

Since the barrel extension needs to enter the receiver in a straight path that seems unlikely without a complicated—and therefore bulky, heavy, expensive, or fragile—mechanism. But please prove me wrong.

[Diamondback]

Concept was you pull the entire front-end assembly about an inch toward you to unlock, which then as it flips puts the BE an inch forward, then pull the assembly backward sliding BE into receiver--ideally this would make the QRB latches there "just to make sure."

[Disciple]

-ideally this would make the QRB latches there "just to make sure."

A complete re-engineer the coupling device then?

[Diamondback]

A complete re-engineer the coupling device then?

The QRB itself would be unchanged, just that the current hard-dock "storage only" rail-to-rail coupler would evolve into something more like Vera from Firefly. That's for another day, though, the entire purpose of this one was a quick-and-cheap proof of concept on "join the pieces into one for grab-and-run with minimal impact on deployment time."

[Disciple]

"My days of not taking you seriously are certainly coming to a middle."

[Diamondback]

Barrel has arrived, BCG ripped out to preserve "mechanically incomplete" status. Remaining to-do:

• Have pro smith chop alignment tabs
• Have pro smith torque and time QRB star nut, HG mount nut and flash hider
• Pin gas tube
• Source and install CR2016 and 1/3N batteries for light and laser
• Source and install M-LOK rail section to mount Lasermax tapeswitch
• Find Lasermax zeroing allen-wrench in the crap-pile of my storage unit

Sling is a cheap airsoft 2-to-1 off Amazon meant only for "range/inert trials"--were I actually writing up the PIP partslist for USAF Armament Shop I would be recommending something like the BFG Vickers 221 or similar convertible. Lasermax unit is set so it fires through a hole in the Damage Industries slingmount/handstop.

[Diamondback]

Disciple, since you specifically asked about this, based on pre-cut lengths once it's all snugged down and finished the front of the rail should be about 3/16 to 1/4" behind the barrel shoulder on a 12.5".

[Disciple]

Diamondback, any updates?

Also, and pardon me if I asked before, do you know the added weight of the QRB itself?

[Diamondback]

Off the top of my head I don't know added weight, lemme rustle up some tools and get back to ya. Could be a bit.

Updates: While I had WANTED to hold-out the BCG as a token "last step" for while my FFL and gunsmithing mentor watch*, Dickslee forced my hand with the HB1240 ban so I shoved that in along with a Damage Industries pistol tube--the kind that's rounded around the rear edge and has a QD socket so it's "distinctly not shoulderable." It's mechanically ready to test fire, but not ready to zero until I can get D&M to return my calls/emails (they were slammed with the pre-1240 beat-the-ban rush) and see about cutting down the alignment tabs on the handguards. The MI Lightweight Combat Rail right now rests on its barrel nut, it'll protect your hand from the hot barrel but it won't hold alignment to use the sights and whatever you do DON'T apply any forward pressure on it. It's still ready to centerpunch any meth-head that forces his way past my door though...
*This was a standard practice for me, they liked to be "present at the creation" when I put the finishing touches on a build and declared it ready for use. The ASDW and the 007 Briefcase Charger are the only two builds in many years I haven't done that with, due to Exigent Circumstances. Right now other than finishing our M16A4 and C7A2 uppers, further builds are on hold while the "fun fund" replenishes... and then I have to hope that either the courts strike down 1240 or after King Jay the Worst is out I can get a Longslide 1911 I doodled out back in college moving before our Rumored Pederast Attorney General comes back to double down for Round 2.


Pro Tip to all the scumbags out in the world: That heavy metal storm door with the heavy duty locks isn't here to protect me from you. It's here to protect YOU from ME, because once you breach it All Bets Are Off.