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    Crosman MAR177 AR-15 Upper PCP Conversion Kit

    Crosman MAR177 AR-15 Upper PCP Conversion Kit

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    Continental USA. Orders $150 & up.
    Cannot be combined with coupons. Details

    1-year limited warranty

    SKU PY-2703-5320


    List Price $650.00 Save $50.00 (7%)

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    • Description
    • Specifications
    • Customer reviews
    • Questions & Answers
    • PCP Hookup
    • MAR177 AR-15 upper PCP conversion kit
    • Fits AR-15 lower*
    • .177 caliber
    • 10-rd removable rotary mag
    • Front sight is a removable post that's adjustable for elevation
    • Rear sight is a carry handle with adjustable flip-up peep sight (2 aperture sizes)
    • Picatinny rail system that accepts all mil-spec options for your preferred sighting system
    • Airstripper
    • Rifled steel barrel
    • Choked, free-floating Lothar Walther barrel
    • Up to 120 shots per fill
    • Built-in manometer (air pressure gauge)
    • Manual crossbolt safety
    • Front sling bracket
    • Meets National Match Air Rifle competition requirements
    • Includes one 10rd rotary mag

    *AR-15 lowers can come with different pin sizes. Most have pins that are .250" in diameter. That's what the Crosman MAR177 fits.

    Additional 10rd mags can be purchased, as can a single-shot tray. The mag and single-shot tray made for the Benjamin Marauder air rifle also fit the MAR177. Both items are shown in the accessory links for this air gun.

    Crosman's MAR177 is an AR-15 upper and attaches to an AR-15 lower. The lower is a firearm. The upper shown on this page is an airgun. Putting an airgun upper on a firearm lower does not make the entire unit an airgun. It's still a firearm in the eyes of the law. Do not shoot this in areas and locales that do not allow discharging a firearm, as you may be cited for violating the law.

    If you've ever wished that your AR-15 could save you some bucks and use airgun ammo, your wish has come true!

    The PCP conversion kit is an upper that fits your AR-15 lower and converts it from powder to air. Fill the onboard reservoir with high-pressure air from a pump, scuba tank or carbon fiber tank.

    The choked, free-floating Lothar Walther barrel is considered the cream of the crop, and it'll deliver match-grade accuracy. In fact, this conversion kit is designed to let you compete! You can have a cool-looking gun without giving up anything in the accuracy department.

    This system is easy to attach to your AR-15 lower. Enjoy more shooting with less noise. Think of all the money you'll save by switching from expensive centerfire ammo to lead pellets!
    • youTube video
    See manual

    other products by Crosman

    0.177" (4.5mm)
    600 fps
    Pre-charged pneumatic
    7.38 lbs
    See manual

    other products by Crosman

    Create an online reviewand share your thoughts with other customers

    Overall rating:3.0 3.0

    Value for money:2.0 2.0

      By John from Canada on 2014-08-20
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    0.00 ratings
    Things I liked:This upper is amazing at what it is designed to do: it allows me to practice the aspects of shooting control (trigger pull, breathing, sighting, etc) on my own AR15 lower with the same aesthetics and controls (same length of pull, stock, cheek rise, grip and after market trigger) as I would use with my normal firearm upper. I am able to achieve this practice with real target interaction & seeing the accuracy of my techniques, not just boring dry-firing practice, for a significant fraction of the cost. Accuracy testing at 25, 50 & 75 feet have been well below 1" grouping with the best tested ammo. Normal AR BUIS can be attached to this upper, another bonus.
    Things I would have changed:The latch on the left side is required to be engaged to fire properly: if it is not latched fully the bolt opens upon firing resulting in air loss, speed loss and accuracy is severely reduced. The latch itself is steel but the receiver is aluminum and this causes a problem: after shooting about 500 pellets I am seeing receiver damage from letting the latch slide into the grove by itself. I would highly recommend that Crosman insert a small shim of at that location, as small as half a dime. Without this modification the receiver may not last to 2500 rounds without extreme user care! Also, the front sling attachment is generally useless for a bench or target based PCP: a short 2 inch Picatinny rail would have been far superior! I tapped out the roll pin and removed it.
    What others should know:Five Notes: 1) Barrel droop was significant and the scope rings had to be shimmed, so I don't recommend this to be the first scope you have mounted. 2) The steel latching handle should not be allowed to drag closed onto the aluminum receiver. 3) I did not get the hollow magazine I seen in reviews, but a solid aluminum block for grip, weight and ballast: not having it for a bore snake and oil was disappointing! 4) the seal is inside the edge of the barrel, not on the outside like a break barrel, so remember that some ammo catches this seal and can damage it: proven with Daisy hollow points. 5)The Crosman/Benjamin magazine extends above the receiver enough that scope mounting can be a problem: an AR15 usually needs forward type mounts and these cannot easily be put onto this receiver. Also, solid one piece mounts cannot be used due to the need for a gap for this magazine. I was not able to perfectly match the scope eye relief on my MAR177 as my normal upper.

    Overall rating:5.0 5.0

    Value for money:5.0 5.0

    Accuracy:5.0 5.0

      By Jan from USA on 2014-04-20
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    0.00 ratings
    Things I liked:Fits great on my 15 lower. Very accurate with my red dot or scope. Functions very well. Easy to pump up to 2000 PSI with the Benjamin hand pump.
    Things I would have changed:Lighten up the over all weight.
    What others should know:The standard sights are not up to snuff. Should be replaced.

    Overall rating:5.0 5.0

    Value for money:4.0 4.0

    Accuracy:5.0 5.0

      By Tom from USA on 2013-11-29
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    0.00 ratings
    Things I liked:The MAR177 fits well on my Yankee Hill lower. I had already made some mods to the Yankee Hill lower (buttstock and trigger) so it was nice to be able to take advantage of those changes. Removed the iron sights and replaced with a 4X combat scope - Shooting indoors on a 10M range this combination has proved extremely accurate. The MAR177 upper is a well made, expensive piece of machinery. Highly recommended for anyone wanting to stay on top of their AR skills.
    Things I would have changed:A friendlier price point.
    Show Other ReviewsCreate an online review and share your thoughts with other customers
    • Harold from USA asked:

      Can you tell me what size air tank it has?

      • John from Canada:

        Dimensions are 18inches long and about 5/8 internal diameter: about 22 cubic inches volume. Takes about 125 pumps of the Benjamin PY-A-2222 pump for 2800psi.

    To fill your PCP gun:
    1. Pick a source of air shown at right
    2. If an adapter is needed, one will be shown
    3. Add both to your cart to get hooked up

    Crosman MAR177 AR-15 Upper PCP Conversion Kit with quick-disconnect connector

    To start over click reset

    Item DescriptionCaliberMax VelocityItemCodeStockGripColor
    AR-15 upper lets you shoot airgun ammo with your AR-15 lower.

    In stock

    0.177" (4.5mm)600 fpsCRMAR177 [PY-2703-5320]SyntheticAmbiBlack


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