MODS: Don't move this to GD.  Just like every other AR/M4 clone thread it belongs here in Tech.  You moving this the last time resulted in the typical GD nonsense

So the original thread was archived so I'm recreating it since it was such a cool thread.



Pics of in service SR-16’s:














Build list so far:

Gen III SR-16 E3 CQB

Upper
Upper Receiver - SR-15/16 E3 CQB Gen III 11.5” Upper Receiver
Rail System - KAC URX 2 Mid-Length
Charging Handle - KAC Charging Handle
Bolt Carrier - KAC Phosphate Carrier
Front sight - URX 2 integral
Rear Sight - KAC 600 Meter or KAC 600 Meter Micro
Optics - Aimpoint T-1/2 or Aimpoint Comp M2/3
Optic Mount - LaRue LT-660, Factory Mount (T-1), Wilcox P/N13600G01 (Comp M2) KAC 30mm Aimpoint Comp Mount P/N 98073-1 (Comp M2)
Magnifier - Aimpoint 3x
IR Laser - Steiner D-BAL A3 or Insight TPIAL (AN/PEQ-2A) or Black/Tan Insight ATPIAL (AN/PEQ-15)
Light - Insight M3X (Incandescent or LED module) or Streamlight TLR-1 HL
Muzzle Device - KAC NT4-QDSS Flash Hider
Handguard Accessories - KAC 11-Rib Rail Cover Panels P/N:95047, LaRue FUG, KAC Foward Pistol Grip P/N:97098

Lower
Lower Receiver - Complete QD Cup SR-15 IWS Lower or Complete Newer SR-15 IWS Lower
Trigger - KAC 2-Stage
Pistol Grip - KAC A2 or Magpul MIAD or Magpul MOE
Stock -Black LMT SOPMOD or Black Magpul CTR
Sling - Black Blue Force Gear VCAS  or VTAC or Magpul M3

MOD 1 SR-16 E3 CQB

Upper
Upper Receiver - SR-15/16 E3 CQB MOD 1 11.5” Upper Receiver
Rail System - KAC URX 3.1 10.75
Charging Handle - KAC Charging Handle
Bolt Carrier - KAC Phosphate Carrier
Optics - Aimpoint T-1/2 or Aimpoint Comp M2/3 or Vortex Razor HD Gen II 1-6x24
Front Sight - KAC Micro
Rear Sight - KAC 600 Meter Micro
Optic Mount - LaRue LT-660, Factory Mount (T-1), Wilcox P/N13600G01 (Comp M2) KAC 30mm Aimpoint Comp Mount P/N 98073-1 (Comp M2) (need help identifying Vortex Mount)
Magnifier - Aimpoint 3x
IR Laser - Black/Tan Insight ATPIAL (AN/PEQ-15)
Light - Insight M3X (Incandescent or LED module) or Streamlight TLR-1 HL
Muzzle Device - KAC NT4-QDSS Flash Hider
Handguard accessories - KAC URX 3.1 Panels & Handstops

Lower
Lower Receiver - Complete QD Cup SR-15 IWS Lower or Complete Newer SR-15 IWS Lower
Trigger - KAC 2-Stage
Pistol Grip - KAC A2 or Magpul MIAD or Magpul MOE
Stock - Black LMT SOPMOD or Black Magpul CTR
Sling - Black Blue Force Gear VCAS or VTAC or Magpul M3/4
Lower Accesories - (Optional) Law Tactical Gen 3 Folder

The first time I've seen drum magazines in use .

Same, somewhat surprised. I wonder if certain teams are using them or if it's a gear selection made at the agent level?

They may be the designated "suppressive fire" dudes

My guess to break contact and provide covering fire so PPD can whisk the POTUS away.

That’s why they probably don’t use suppressors on them. They want it loud.

No surpressors, no triple tap muzzle brake? Interesting to see their setup's.

Muzzle brakes would SUCK inside a vehicle

Pmags for days.

Apart from the rail, are their any significant differences between the two models? Forgive me, I'm not a KAC nerd. Is one model being phased out in favor of the other? When I look on KAC's website I'm only seeing them offering the newer Mlok models now.

Their original 14.5 SR's had NT4 hiders, but still no NT4s.

PR optics have always been a top agency priority, which is my guess why cans still aren't standard. CAT's helmets and plate carriers were first issued sometime over the the last decade or so. Change is slow over there.

That's odd especially since they are a counter assault team. You'd think they would be geared up with all necessary items.

You'd think. Apparently there's new blood running the firearms program, so they should be caught up to the 21st century eventually.

Or they realize the funds would be better spent elsewhere within the agency? Having a unit like that as a deterrent or "in case of emergency" is a great contingency, however with little to no call outs or real world operations to justify said expenses, I would think it gets to a point of diminishing returns. Hence, maybe funds could be better well spent/allocated.

That last photo with the side mounted Safariland mag pouch. I have never seen anyone using it like that before. See's weird to get a speed reload that you'd have to pull away instead of conventional straight up or canted.

Huh.

I've got an extra, maybe I should try it out to see if I am missing something.

My thought too.  No cans?  No go.

Maybe. Given the team's priority it's likely a matter of optics and/or internal politics in this case. They have plenty of pricey toys.

I'm certain the topic has been kicked around more than once. Again, old school thinking can be slow to change over there.

I would think it's in the Secret Service's plan for their SBR's to be loud. If someone ever has to engage a hostile the gunfire will be heard by all.

This would alert everyone to the direction of the immediate threat and place the entire team on high alert.

Suppressors are heavier to lug around all day, so there's that.

Yeah I know cans are cool but I'm thinking they aren't going for some high speed assault. If these guys are shooting chances are they want it to be loud.

I'm sure the vehicle weapons are on a whole other level as far as the guys in black suits.

For the guys running ear muffs, not having suppressors isn't a big issue in terms of communications.

For the guys without, suppressors would let them communicate.  Even with the in ear buds, those SBRs are going to be too loud to hear radio traffic.  Never mind shouted coordination.

Why no CQB Mod 2.1 pics?

Too early

I was gonna mention that, but didn't wanna start down the "but most Tier 1 units use both" rabbit hole.


Bingo.

Bump

These may have been stolen from the OG thread. Attached File
Attached File

What mlok handguard?

URX 2.1

Mod 2.1 upper

Booya. I been stacking urx 2 mids since 2004 man.
I am cashing the fuck out on these man..where’s the clone boi que. my for sale sign is up and out!..

reload laying prone while keeping yourself a low target profile.

Those are two different units in SOD, CAT (Counter Assault Team) Agents and ERT (Emergency Response Team)  Uniform Division Officers

dear smart(er) people, what is this piece of kit?

Just a taped bundle of chemlights for marking.

Looks like one Surfire 60 rounder in there too. After dropping one and it spewing all of the ammo out like a fountain I decided a 30 round PMAG was just fine.

Certainly don't blame you. With how finicky everyone reports the various coffin mags and drums as being, I just don't see enough benefit over a 30 round mag with plenty of spares.

From my experience toting a rifle around for a living, the extra weight is felt pretty quickly too. I'd rather have a lighter more comfortable setup than have an extra 20 or 30 rounds before reloading.

I've only run into one Surefire mag in the Army - one of my Infantry officers, who carried a 60-rounder with him in eastern Afghanistan as a platoon leader in the 101st and still had it as a company commander. He said it always worked perfectly for him. He would have been using it in Afghanistan in the 2011-2013 timeframe, I think, so I believe that would have made it their original design, which I always heard had reliability issues. As far as the weight goes, he's a beast who was a bouncer and MMA fighter before joining the Army, so I doubt he noticed it.

Interesting to see so many Streamlights, I thought tier 1 oper8tors only used Surefire's.

Yea...streamlights .   I would assumed more surefires or modlites

Wild guess: .gov didn't buy them; the user added it.  Contrary to popular ARF belief, most people, even the pros, aren't willing to spend $400+.....for a flashlight.

The fact that so many have the same light is a pretty good indicator that they are indeed issued.

TLR series...oof

Great for smacking the nads!

Bump

Yea, that’s what I said.
Attached File

Think reloads while seated inside a vehicle

This.  So much this.  

Also, streamlights work, and one need not spend $400 to get a flashlight.

Thanks for the thread. Interesting stuff, I like the idea of using the annoying muzzle blast and flash of short barrels in an offensive way to get the targets deafened, disoriented, etc.

I see lots of BUIS in the rear, but no fronts... Or do I need to make appt w/ optometrist?

Front sight is built into the rail.  Notice nothing is at the very front of the guns?

probably so, the USSS picks things that work. My guess it was determined the Streamlight HL gave them the performance and features they wanted at the right price point.

I genuinely don’t get the desire to emulate a weapon system just because XYZ agency uses it.  If people knew how purchase decisions are made...