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1:7

Angiotensin (1-7) (C41H62N12O11; Molecular weight = 899.02 g/mol; H-Asp-Arg-Val-Tyr-Ile-His-Pro-OH) is an active heptapeptide of the renin–angiotensin system (RAS).
In 1988, Santos et al showed that Angiotensin-(1-7) was a main product of the incubation of Angiotensin I with brain micropunches. In the same year Schiavone et al, reported the first biological effect of this heptapeptide. Angiotensin (1-7) is a vasodilator agent that plays important roles in cardiovascular organs, such as heart, blood vessels, and kidneys having functions frequently opposed to those attributed to the major effector component of the RAS, angiotensin II (Ang II).

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Recent contents
  1. justonemorear

    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
  2. arakboss

    BCA Complete AR15 Side Charging Upper Cold Hammer Forged Barrel, 5.56, 16", MLOK, Nitrided. $210 plus shipping.

    https://www.bearcreekarsenal.com/556-16-bn-m4-chf-barrel-1-8-twist-carbine-15-mlok-sch-upper.html
  3. DonkHumpington

    FS> New PSA JAKL 13.7" 5.56 p/w

      1. For Sale
    • $1150
    • Castle Rock
    • Washington
    New/unfired. $1,150. Located in Castle Rock. PRODUCT DETAILS Long Stroke Gas Piston Operating System 8620 Front Trunnion 4340 Carrier 7 Lug Shot Peened Carpenter 158 Bolt Monolithic 6105 Receiver; Hard Coat Anodized 13.7" 5.56 Nato Nitride 4150V Chrome Moly Steel Barrel Twist Rate: 1 in 7"...
  4. ChrisWolf

    LANTAC 16” 1:7 .223 Wylde Barrel NEW.

      1. For Sale
      2. For Trade
    • $200
    • Hillsboro
    • Oregon
    Bought this for a build and decided to go a different direction. I have another barrel from them, it shoots lights out. I believe this is either a intermediate or rifle length gas system. FSOT FSOT Silver/CASH/VENMO/PP willing to ship. Looking for but not limited to. EOTECH EXPSxx, HOLOSUN...
  5. aljames

    PSA 10.5" CHF CARBINE LENGTH 5.56 NATO 1:7 GEISSELE 9.5" MK14 M-LOK UPPER - NO BCG OR CH

      1. For Sale
    • $450
    • Grants Pass
    • Oregon
    ETA 3.0: Reduced again, how is this still here? ETA: Reduced price again! ETA: This was sold but the buyer flaked. So I reduced the price and relisted it! Probably as low as I'll go. I'll SBR it if it doesn't sell at this price. I bought this new. I had it on my wish list but kept...
  6. aljames

    PSA 10.5" CHF CARBINE LENGTH 5.56 NATO 1:7 GEISSELE 9.5" MK14 M-LOK UPPER - NO BCG OR CH $525 shiped

      1. For Sale
    • $525
    • Grants Pass
    • Oregon
    I bought this new. I had it on my wish list but kept missing it whenever it came into stock. After about 1 year I snagged this one for $629 direct from PSA. I briefly installed a BCG [not included]and put it on a braced lower. I never even had time to buy an optic and FJB/AFT came along with...
  7. A

    16 inch stag arms 1:7 556 barrel

      1. For Sale
    • $120
    • SCAPPOOSE
    • Oregon
    Barrel has 30 rounds down it switched to longer barrel looking to get 120 obo
  8. srxfan

    SPF ** 16", carbine, .223 Wylde, 1:7, A2, 11" keymod, MSF Barrelled Upper for sale - $180

      1. 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"...
  9. JRummel

    NEW PSA 16" CARBINE LENGTH 5.56 NATO 1:7 M4 NITRIDE FREEDOM UPPER -NO BCG

      1. For Sale
    • $160
    • Marysville
    • Washington
    Clearing out the safes. PSA 16'' new never mounted on a lower. No BCG or charging handle. Will travel local for sale Will ship/Buyer pays actual shipping $160.00
  10. Kotto69

    CBC 5.56 16” 1:7 barrel with linear comp

      1. For Trade
    • Sherwood
    • Oregon
    Looking to make the jump to 450 Bushmaster. I have a CBC barrel and Stag Arms bolt 5.56/.223rem. I have 80 rounds of Barnes Vor-TX .223 55gr TSX ammo to go with it. I’m looking for a 14.5” to 16” barrel that has a mid length gas port and a bolt to accommodate a 450 Bushmaster.
  11. hisokas

    Colt 16" 5.56 Pencil Barrel 1:7 Twist, less than 100rds

      1. 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.
  12. 5

    AR-15 PSA 16" 5.56 NATO 1:7 Midlength Nitride 13.5" Lightweight M-Lok MOE EPT Rifle w light, red dot, sling

      1. For Sale
    • $725
    • Corvallis
    • Oregon
    PSA PA-15 5.56 rifle. Includes Magpul sling, Sig Romeo 5, and surefire tactical light on an Arson Machine mlok mount. PSA enhanced performance trigger, MBUS sights MOE stock, MOE K2 pistol grip. PSA billet charging handle latch. Haven't shot it much, probably 300rds. Spent most of it's life in...
  13. M

    16" 556 1:7 twist bull barrel. 1-4 vortex, frame mounted bipod

      1. For Sale
      2. 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.
  14. M

    16" 556 1:7 twist bull barrel. 1-4 vortex, frame mounted bipod, cerakoted.

      1. For Sale
      2. 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.
  15. S

    PSA 16" 1:7 Carbine Length 5.56 Premium CHF Upper

      1. For Sale
    • $300
    • Beaverton
    • Oregon
    Great basic upper, bought back in 2018 selling as I was intending on using it but don't need it anymore. Has roughly 300 rounds through it, no BCG or charging handle. Local FTF sale no shipping, will meet in the Beaverton to Yamhill area.
  16. Joe Link

    BCM 16" 5.56 NATO 1:7 Enhanced Light Weight Barreled AR-15 Upper - 15" M-LOK MCMR Rail - $625

    Primary Arms has the Bravo Company Manufacturing 16" 5.56 NATO 1:7 Enhanced Light Weight Barreled AR-15 Upper with the 15" M-LOK MCMR Rail for $625 + shipping using coupon code SAVE12. Definitely a good deal if you're in the market for one of these...
  17. S

    20" AR-15 stag arms 1:7

      1. For Sale
    • $700
    • Portland
    • Oregon
    This is a Stag Arms 20' A2 upper with a 1:7 twist on Anderson lower. Internals include Stag Arms BCG/CH, Stag Arms lower parts kit, Stag Arms buffer kit, accessories include Magpul carbine length fixed stock, Magpl rifle length handguard (comes with original A2 handguard),m-lok mounted weapon...
  18. Angler-Saxon

    PSA AR-15 18" RIFLE LENGTH .223 WYLDE PREMIUM BARREL - TRADE FOR BCG

      1. For Sale
      2. For Trade
    • $115
    • La Center
    • Washington
    Brand new PSA AR-15 18" RIFLE LENGTH .223 WYLDE 1:7 STAINLESS STEEL BARREL. Trades: BCG Glock 42, 43, 19, 26, or conversion barrel (threaded only) Sig P365 Threaded barrel AR15 barrel 14.5" or shorter AR15 Upper Receivers AR15 Rails Gold/Silver Glock slides (plus cash on my side) Optics/Red...
  19. spookshack

    Left hand AR upper w/ BA 8in 5.56 1:7 barrel

      1. For Sale
    • $175
    • Vancouver
    • Washington
    I have a like new left hand AR upper (FA and DC installed). I don’t recall the make of the upper but I think I bought it from Davidson Defense. The barrel is from Ballistic Advantage. It came from the factory with a pinned low pro gas block. No handguard will be included as I will be reusing...
  20. chipotle

    20" HBAR 5.56 NATO 1:7 Twist AR-15 Barrel w/Gas Block & Gas Tube

      1. 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.
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