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radian
The radian is the standard unit of angular measure, used in many areas of mathematics. The length of an arc of a unit circle is numerically equal to the measurement in radians of the angle that it subtends; one radian is just under 57.3 degrees (expansion at A072097). The unit was formerly an SI supplementary unit, but this category was abolished in 1995 and the radian is now considered an SI derived unit.
Separately, the SI unit of solid angle measurement is the steradian.
The radian is represented by the symbol rad. An alternative symbol is c, the superscript letter c (for "circular measure"), the letter r, or a superscript R, but these symbols are infrequently used as it can be easily mistaken for a degree symbol (°) or a radius (r). So, for example, a value of 1.2 radians could be written as 1.2 rad, 1.2 r, 1.2rad, or 1.2c, or 1.2R.
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Separately, the SI unit of solid angle measurement is the steradian.
The radian is represented by the symbol rad. An alternative symbol is c, the superscript letter c (for "circular measure"), the letter r, or a superscript R, but these symbols are infrequently used as it can be easily mistaken for a degree symbol (°) or a radius (r). So, for example, a value of 1.2 radians could be written as 1.2 rad, 1.2 r, 1.2rad, or 1.2c, or 1.2R.
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Radian talon ambi safety selector black, used excellent condition.
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- For Sale
- For Trade
- $50
- Portland
- Oregon
For sale/trade I have the Radian talon ambi safety selector, used excellent condition. This comes with the installation tool. This is worth $65 new, selling for $50. I take cash, venmo, or trades. If you want any other parts for your build let me know. I have lots of other ads up for...- Classified Ad
- Part & Accessory Classifieds
- jozguns
- Replies: 0
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Promoted Radian model 1 300blk setup
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- For Sale
- $2500
- Parkdale
- Oregon
Radian model 1 8.5" receiver set in Radian brown, Sig 9" 300blk barrel with 1/5 twist (came off m400 pistol), PWS FRC2 muzzle brake(plan b/Rearden mount), Superlative Arms adjustable gas block, Unity riser, Eotech exps2, Modlite 18350 body with phlv2 mini head, Arisaka mount, surefire UE tail...- Classified Ad
- Handgun Classifieds
- diddy_oil
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- Tags
- 300 blackout model 1 radian
- Replies: 0
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11.5in 5.56 SLR-B15
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- For Sale
- For Trade
- $2000
- Albany
- Oregon
Ambi lower Geissele CHF barrel, gas block and gas tube. Geissele MK16 10.5 inch rail Forward control designs twin dimple dust cover PWS ratchet lock castle nut and end plate Black ordinance rain nib BCG Radian trigger Radian safety Radian charging handle Geissele buffer tube Geissele H2 buffer...- Classified Ad
- Handgun Classifieds
- spost
- Replies: 2
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Radian Ramjet & Afterburner G19.5
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- For Sale
- For Trade
- $300
- Tualatin
- Oregon
Used. Radian Ramjet and Afterburner for a Gen 5 Glock 19 / 19X / 45. Comes with packaging. I'll straight trade for a PMM micro comp and barrel for a G26. That's it. I’ll ship if you cover shipping.- Classified Ad
- Part & Accessory Classifieds
- 1775usmc
- Replies: 2
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Radian Compressor recoil spring
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- Want to Buy
- Want to Trade For
- Tualatin
- Oregon
Like the title says. Looking for a Radian Compressor recoils spring for a G19 Gen 5. Used is fine. Can trade mags or ammo.- Classified Ad
- Parts & Accessories Wanted
- 1775usmc
- Replies: 0
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Sig Sauer P365 Macro w/EPS Carry MRS, Radian Afterburner-Ramjet, Radian Backstrap/Magwell and 2 Mags with Radian Baseplates
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- For Sale
- $1300
- Happy Valley
- Oregon
Selling one my EDC pistols. Sig Sauer P365 FCU Gray Guns Macro Frame Sig Sauer 3.1" Slide Radian Afterburner/Ramjet Radian Backstrap/Magwell Combo 2 x 17 round Magazines w/Radian Baseplates Holosun EPS Carry MRS Red Dot Asking $1,300.00 open to reasonable offers Was $1680 to put all together...- Classified Ad
- Handgun Classifieds
- crashbandicoot
- Replies: 0
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SOLD: Like New Radian Afterburner/Ramjet Bronze Glock 19/19x/45 Gen5
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- For Sale
- $350
- Happy Valley
- Oregon
Selling a like new Radian Afterburner/Ramjet with the bronze barrel for Glock 19/19x/45 Gen5. Installed but never fired. Round count: ZERO SOLD Asking $350.00 obo- Classified Ad
- Part & Accessory Classifieds
- crashbandicoot
- Replies: 0
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Noveske 14.5 barrel pull
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- For Sale
- For Trade
- $300
- Hillsboro
- Oregon
Rebuilding a radian receiver set into a 6 ARC and commiting to my 12.5 for 5.56. Before my 12.5 build, this was my no expenses spared build. Absolutely loved the performance, but it's now just an extra and I am cleaning house. - 14.5 CHF Afghan barrel w/ mid-length gas - Noveske labeled...- Classified Ad
- Part & Accessory Classifieds
- MDDM
- Replies: 7
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Glock 19.5 Agency frame, Zev Slide
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- For Sale
- For Trade
- $899
- Albany
- Oregon
Hello, I'm selling my very custom Glock 19 Gen 5. The frame is stippled and undercut/ledge cut by Agency Arms, no I don't have paperwork for it as I bought it used. This gun will come with an OEM stripped non matching slide and barrel if you want it. I'll list the parts below. Buyer pays fee...- Classified Ad
- Handgun Classifieds
- Ranger Walker
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- Tags
- 9mm agency arms glock radian zev
- Replies: 1
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Custom 10.5" AR 556
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- For Sale
- $800
- Beaverton
- Oregon
Downsizing and no longer need. Has 500+ rds flawlessly with and without can. $1200 as is, buyer pays FFL Xfer at A Cut Above Pawn in Beaverton. $1000 $800 (Optic has been sold) ORW lower with milspec parts kit Sabre 2.5lb 1S trigger Aero BCG Aero upper FDE Rail scales FDE Magpul handstop... -
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Vortex Radian Carbon Fiber Tripod
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- For Sale
- $650
- Castle Rock
- Washington
Brand new, never used. $650 https://vortexoptics.com/radian-carbon-ball-head-tripod-kit.html- Classified Ad
- Part & Accessory Classifieds
- clownbuster
- Replies: 4
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Bazooka Green Noveske Infidel - Unfired
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- For Sale
- For Trade
- $2600
- Hillsboro
- Oregon
Up for grabs is a brand new, never fired Gen 4(the latest variant) Noveske N4 Infidel. It has a 13.7" barrel with a tucked pin & weld KX3 making it a 16" rifle. Comes with original box and contents. All specs listed in the photos below. Opening it up to a cash sale, but I would be open to... -
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Price Drops! - PARTS! Priced to sell - Radian, Geissele, Aero, and more!
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- For Sale
- Tualatin
- Oregon
I'm trying to clean out my extra parts, hoping priced to sell. Please no low balling. Pick up in Tualatin SOLD- Like new Magpul ACS Stock $40 Box says "commercial spec" I had it on a mil spec buffer tube with no issues - NIB - Geissele Super Tricon AR-10/AR-15 Trigger - $160 SOLD - NIB -...- Classified Ad
- Part & Accessory Classifieds
- Robinhood_24
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- Tags
- aero geissele primary arms radian
- Replies: 3
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Radian Raptor-SD
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- For Sale
- $90
- Boise
- Idaho
Radian Raptor SD, Brown, for ar15 / m16 suppressor optimized. $90 shipped, venmo or paypal.- Classified Ad
- Part & Accessory Classifieds
- dhshred710
- Replies: 0
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Aero Precision 16" M4E1/AR15-A3 with LaRue MBT-2S
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- For Sale
- For Trade
- $800
- Eugene
- Oregon
Aero Precision 16" M4E1/AR15-A3. $800 cash. Trade value negotiable. Click retail prices for manufacturer information. Includes: - LaRue MBT-2S Trigger ($115) - Geissele Maritime Bolt Catch ($29) - Radian Talon 5/90 - GI ($38.95) - B5 SOPMOD Stock ($61) - Radian Raptor Charging Handle ($94.95)...- Classified Ad
- Rifle Classifieds
- shoGUNSLINGR
- Replies: 1
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BCM AR15 Upper 14.5 p/w warcomp
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- For Sale
- $650
- Scappoose
- Oregon
BCM ELW CHF upper. It’s a 14.5 with a surefire warcomp pin and weld. Comes with radian charging handle and bcm bcg. Does not come with attachments and also half marks on the handguard- Classified Ad
- Part & Accessory Classifieds
- deltawolf
- Replies: 1
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Radian Afterburner Ramjet Gen5 19/19x/45
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- For Sale
- $300
- Happy Valley
- Oregon
Selling a used Radian Afterburner + Ramjet Gen 5 19/19x/45 Round count approximately 300. SOLD Asking $300.00- Classified Ad
- Part & Accessory Classifieds
- crashbandicoot
- Replies: 0
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Price Lowered - Geissele Super Duty 40mm Green 14.5 w/Eotech and Cloud Defensive
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- For Sale
- For Trade
- $2600
- Happy Valley
- Oregon
Listing my Geissele Super Duty Color: 40mm Green Barrel: 14.5" pinned and welded surefire closed tine Optic: Eotech XPS2-1 Green Reticle on Unity Riser Light: Cloud Defensive Rein 2.0 Full Size Furniture: Magpul Controls: Radian Raptor SD and Talons Comes with original boxes for rifle, optic...- Classified Ad
- Rifle Classifieds
- crashbandicoot
- Replies: 3
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AR Parts: Surefire, Ergo & KAC rails
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- For Sale
- $150
- Vancouver
- Washington
Hello, I have for sale a bundle of parts for a build that is not going to materialize, all items are new (except KAC rails): $150 Surefire three-prong, with shims Radian talon ambi (45/90) safety - SOLD Ergo FDE grip rail set 6 KAC rail panes (#1S002 - 11 rib) Thanks- Classified Ad
- Part & Accessory Classifieds
- ivanthebear
- Replies: 1
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Radian Model1 14.5" Pinned - Price Reduced
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- For Sale
- $2450
- Portland / Bend
- Oregon
Radian Model 1 - 14.5" .223 wylde/5.56 NATO Pinned/Welded with Dead Air Keymoe flash hider/mount in Radian Grey. Approx 500 rounds through the rifle, extremely accurate setup. Bare Rifle - $2450 With Vortex Razor Gen2 MRAD 1-6x w/ADM Mount - $3450 I travel between Portland and bend weekly...- Classified Ad
- Rifle Classifieds
- CDUBNW
- Replies: 2
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