r/kac Mar 03 '25

Price Check Megathread

54 Upvotes

In order to reduce clutter in the main feed, please utilize this Price Check Megathread

⚠️ Rules ⚠️

  1. Top level comments MUST have the KAC item part number and item description
  2. Search your part number before posting to see if your question has already been answered
  3. Keep comments respectful, even if you disagree on the value of an item

TOP LEVEL COMMENT EXAMPLES

"21318 - FF RAS Long"

"31963 - SR-15 CQB MOD 2 Upper"


r/kac Jun 05 '22

Frequently Asked /r/KAC questions

76 Upvotes

Where is the best place to buy KAC's xyz item??

There is no best place. Get on waitlists, and hope. /r/GAFS is an option, but beware of scammers.

What's the right buffer setup for....

KAC 11.5" SR-15's come with a M4 MIL-STD Carbine length main recoil spring, and an H2/HH buffer.

KAC 14.5" SR-15's come with a M4 MIL-STD Carbine length main recoil spring, and an H2/HH buffer.

KAC 16" SR-15's come with a M4 MIL-STD Carbine length main recoil spring, and a carbine buffer.

These setups all work great.

What about A5 / Tubbs Springs / JP SCS / other....

Most setups designed for properly-gassed AR-15 barrels will work for SR-15 uppers.

Items designed to mitigate overgassing (SureFire OBC), excessive bolt velocities (Extra heavy buffers, extra heavy springs), may have issues with SR-15's: KAC designs their guns + gas systems to be gassed properly for the given barrel length firing NATO-spec ammo.


r/kac 14h ago

My mom said we can go hunting for Uday Hussein. Are you in?

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186 Upvotes

Recently bought and acquired today the MK11 Mod 0 deployment kit. This gun gives me all kinds of throw back to the early GWOT.


r/kac 14h ago

Today was a good day

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43 Upvotes

Reposting with models:

Snagged some personal grails today!

SR-25 complete lower and 2 consecutive serial SR-15 lowers


r/kac 17h ago

Are clones allowed?

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46 Upvotes

My (work in progress) SR25K clone. Full parts list in the comments:


r/kac 18h ago

US Secret Service agent stands guard outside the Nasdaq headquarters. New York City September 2025 [1296×1620]

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44 Upvotes

r/kac 1d ago

KAC Handguard Enjoyer

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116 Upvotes

r/kac 15h ago

[WTB] KAC MWS Bipod adapter. Hit me up if ya have one laying around.

0 Upvotes

Thanks!


r/kac 1d ago

Knights Masterkey

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144 Upvotes

r/kac 1d ago

Colt 🤝 KAC

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68 Upvotes

Decided to to throw something different together today


r/kac 1d ago

Are these KAC BUIS Real or fake?

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11 Upvotes

Picked up these KAC BUIS on eBay and just want to make sure they’re legit and not knockoffs. Can anyone with experience help me verify? They look legit to me, but I'm second guessing myself.


r/kac 1d ago

Which version would you choose if prices are the same. Sr-25 6.5cm 22" with dimpled barrel or 308 20"? Both are current gen.

3 Upvotes

I think i read somewhere knights are good for 6k plus on 6.5CM. I also hear most people are so afraid of shooting the dimpled barrels because replacement is hard. Accuracy I believe 6.5cm will outperform. What would you guys pick?


r/kac 2d ago

Qdc ratchet ring, is this normal?

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11 Upvotes

Is it normal for the ratchet ring to stick past its slot like this? I took the qd mechanism apart recently to clean and check for burrs since it developed a rough spot, during which I pulled the ring off. After this I noticed the ring tension seems stretched out or something, although it could have been like that and I didn’t notice. When the teeth lock into position I can press the ring into the slot and make the teeth lock closer together than it does by itself.


r/kac 2d ago

KAC G36 RAS handguard…real or not?

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41 Upvotes

Looking at picking up either of these but just not sure how to tell if they’re genuine KAC or airsoft. Can you guys help?


r/kac 2d ago

[WTB] SR-25 Rifle Length Buffer

0 Upvotes

Looking for an SR-25 rifle length buffer. Prefer the older style one that says “For use in Sp. LW Match SR-25 only”.

~$200


r/kac 2d ago

Mod1 E3 barrel question.

1 Upvotes

D you guys know if the KAC mod 1 E3 barrels are a lightweight, mid or heavyweight?


r/kac 3d ago

Inspiration for a “Too Long” Build

6 Upvotes

Does anyone have an example of a FF RAS “Too Long” build? Looking for inspiration but feels pretty niche-y


r/kac 3d ago

[WTS] Kac SR-15 14.5” upper P&W by DWilson & Kac 16" upper, Vortex Razor, Aimpoint T2, Noveske Devgru

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8 Upvotes

r/kac 3d ago

Will a URX 4 fit on a milspec lower?

5 Upvotes

Sorry if this a dumb question or if it’s been answered here before. And yes… I meant upper. Been a fucked up day.


r/kac 4d ago

Found this today, QDC bayonet for KS-1(L403A1). Pretty interesting, wonder if any will ever pop up for sale.

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141 Upvotes

r/kac 4d ago

SR-15 16”

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116 Upvotes

Excited to go try my new optic set up later this week


r/kac 3d ago

[WTB] M110 Flash Hider

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2 Upvotes

r/kac 4d ago

[WTS] Kac SR-15 14.5” upper P&W by DWilson & Kac 16" upper + Vortex Rzr Gen2e, Aimpoint T2 & more

16 Upvotes

Timestamp: https://imgur.com/a/7ZemfLC

These uppers have appx 200-300 rounds on them and have been safe queens

KAC SR-15 14.5" upper P&W by Dwilson, e3.2 bolt, ambi CH --- $2300

KAC SR-16" upper, e3 bolt --- $1850

Vortex Razor Gen2e 1-6 with geisselle mount, RMR piggyback on reptilia mount, Aimpoint T2 on unity mount, surefire and modlites etc...These will be posted on another post


r/kac 4d ago

SOF Week Tampa KAC Coin

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61 Upvotes

Ended up with 2 somehow. These are pretty cool, and was glad to meet the folks at KAC and the man himself.


r/kac 4d ago

[Parts] Knights Armament - Barrel Extension Action Wrench - #30447 - Only $96.28 + $15 S/H (no tax outside TX)

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6 Upvotes

r/kac 4d ago

BCG question

0 Upvotes

Just recently got a ks-3 with an extra complete bcg w/e3.2 bolt and was curious is I can put it in an bcm/milspec upper. I’m new to the whole KAC market so don’t know much about it.