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1:7 twist
In knot theory, a branch of mathematics, a twist knot is a knot obtained by repeatedly twisting a closed loop and then linking the ends together. (That is, a twist knot is any Whitehead double of an unknot.) The twist knots are an infinite family of knots, and are considered the simplest type of knots after the torus knots.
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BC-15 5.56 NATO Pistol 7.5" Parkerized M4 Barrel 1:7 Twist Pistol Length Gas System 6.5" MLOK No Magazine - $352.81
BC-15 5.56 NATO Pistol 7.5" Parkerized M4 Barrel 1:7 Twist Pistol Length Gas System 6.5" MLOK No Magazine - $352.81- Classified Ad
- Great Deals
- justonemorear
- Replies: 1
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NIB 12.5" 5.56 Complete Upper - Ballistic Advantage/Aero Precision
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- For Sale
- $275
- Portland
- Oregon
This upper has never been assembled or fired by me. From the website: Includes: BA AR15 Assembled Upper Receiver BA 9" AR15 ATLAS S-One M-LOK Handguard 12.5" 5.56 Government Profile Carbine Length Barrel, Modern Series Pinned Lo-Pro .750 Gas Block Carbine Length Melonite Gas Tube Product...- Classified Ad
- Part & Accessory Classifieds
- silent_tofu
- Replies: 0
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SPF ** 16", carbine, .223 Wylde, 1:7, A2, 11" keymod, MSF Barrelled Upper for sale - $180
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- For Sale
- $180
- Beaverton
- Oregon
Hi all, I have a lightly used (365 rounds) assembled barrelled upper for sale (meaning, upper receiver, barrel, gas system, handguard. No BCG/charging handle). It is professionally assembled, not a home build, by Mid State Firearms. It worked 100% for me. I ended up getting another 16"... -
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Colt 16" 5.56 Pencil Barrel 1:7 Twist, less than 100rds
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- For Sale
- $200
- Hillsboro
- Oregon
Selling for a friend who shot less than 100rds through it. Does include barrel nut, flash hider, A2 front sight. Barrel is marked C MP 5.56 NATO 1/7 No trades or shipping, cash only. Prefer to meet up in the Tanasbourne area.- Classified Ad
- Part & Accessory Classifieds
- hisokas
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- Tags
- 1:7 1:7 twist pencil pencil barrel
- Replies: 2
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16" 556 1:7 twist bull barrel. 1-4 vortex, frame mounted bipod
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- For Sale
- For Trade
- $650
- Kelso
- Washington
16" 556 1:7 twist bull barrel. 1-4 vortex, frame mounted bipod, cerakoted. For sale or trade. With weapon related trades. $650 with optic. $525 without.- Classified Ad
- Rifle Classifieds
- Michael566
- Replies: 0
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M
16" 556 1:7 twist bull barrel. 1-4 vortex, frame mounted bipod, cerakoted.
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- For Sale
- For Trade
- $650
- Kelso
- Washington
16" 556 1:7 twist bull barrel. 1-4 vortex, frame mounted bipod, cerakoted. For sale or trade. With weapon related trades. $650 with optic. $525 without.- Classified Ad
- Rifle Classifieds
- Michael566
- Replies: 0
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20" HBAR 5.56 NATO 1:7 Twist AR-15 Barrel w/Gas Block & Gas Tube
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- For Sale
- $80
- Vancouver
- Washington
FS: BCA 20" HBAR profile 5.56 NATO 1:7 twist barrel w/gas block & pinned gas tube ~300 rds. $80 FTF preferred: cash or Venmo, PPFF, Cashapp, Zelle, etc. in the greater Vancouver area. Shipping is a possible if buyer covers cost. If you see this post, it is still available.- Classified Ad
- Part & Accessory Classifieds
- chipotle
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- Tags
- 1:7 1:7 twist ar-15 barrel gas tube tube
- Replies: 1
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Complete Upper Assembly 5.56 NATO 20”
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- For Sale
- $400
- Seattle
- Washington
5.56 NATO 20” Parkerized Heavy Barrel 1:7 Twist with Rifle Length Gas System Brand new and never shoot before, the BCG and Upper can separate sale, BCG $90 upper $360. interested text me 4253896770, thanks. Meet at Seattle Area.- Classified Ad
- Rifle Classifieds
- aaronzhao
- Replies: 0
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