Date: 27/9/2016 15:30
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Air Arms S400 MPR Precision, Poplar Stock

Air Arms S400 MPR Precision, Poplar Stock

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PY-2171-4381

Lifetime limited warranty

$999.99

List Price $1,150.00 Save $150.01 (13%)

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  • Description
  • Specifications
  • Customer reviews
  • Q & A: 3 answered questions
  • PCP Hookup
  • S400 MPR Precision 10-meter target rifle
  • Precharged pneumatic (PCP)
  • Single-shot
  • Bolt-action (not adjustable from RH side of gun)
  • 7 joules (5.15 ft-lbs.)
  • Highly adjustable match trigger (first-stage length, second-stage pull, move up/down, forward/back)
  • 11mm dovetail
  • Adjustable cheekpiece
  • Adjustable buttpad
  • 12-groove, nickel-plated Lothar Walther barrel
  • Globe front sight accepts inserts
  • Fully adjustable rear diopter sight
  • Removable reservoir with built-in gauge (manometer)
  • Lightweight, ambidextrous poplar stock

To fill the gun, unscrew the air reservoir and attach it to the 200-bar DIN hole of a scuba tank or hand pump. The end of the reservoir has a manometer (air pressure gauge), so you'll always know how much air is left in the tank. The correct air pressure for the MPR is 200 bar (2,900 psi).

If you enjoy winning 10-meter matches, the Air Arms S400 MPR Precision air rifle can help you achieve your goals! 80% of the value for 40% of the price!
See manual
See schematics

other products by Air Arms

Caliber0.177" (4.5mm)
Max Velocity540 fps
Loudness2-Low-Medium
Barrel Length19.25"
Overall Length41.75"
Shot Capacity1
BarrelRifled
Front SightGlobe w/Aperture Inserts
Rear SightDiopter/micrometer adjustable
Scopeable11mm dovetail
TriggerFive-way adjustable match
ButtplateAdjustable
Suggested forCompetition
ActionBolt-action
Safetynone
PowerplantPre-charged pneumatic
FunctionSingle-shot
Max Shots per Fill120
Body TypeRifle
Weight6.8 lbs
See manual
See schematics

other products by Air Arms

Create an online reviewand share your thoughts with other customers

5.0 5.0

5.0 5.0

5.0 5.0

By Neil from USA on 2016-08-26
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0.00 ratings

Verified Purchase

Things I liked: Just received my S400 yesterday and love it. Just started on sighting it in with benchrest and already putting pellets through the same holes. Great accuracy out of the box. Fit and finish on mine is immaculate. I have seen a few issues noted in previous reviews about some minor stock problems but mine came perfect. Machine work is very good. I would imagine that any problems I have shooting competitively is going to rest on my shoulders and not the guns.

Things I would have changed: Not much except maybe the sights and that may just be me not being used to them. It seems it takes quite a few clicks to get it zeroed in on target. Like I say, that may just be me and my old worn out eyes too.

What others should know: I think this would be a great gun to get your feet wet in 10 meter matches. Larger individuals may need to add some spacers to the butt stock to adjust your pull but everything else in my opinion is pretty easily adjusted on this gun. Maybe a bit pricey but from what I've seen accuracy wise so far it's worth it. Just be sure and try different brands and weights of pellets to get the most out of her.

3.0 3.0

4.0 4.0

5.0 5.0

By William from USA on 2016-03-09
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1.01 rating

Verified Purchase

Things I liked: It is very accurate in my opinion, but I have never shot anything more expensive than this rifle. For testing I bench rest from a standing position because I have to shoot from my basement up half a flight of stairs into the garage to get a 10 meter distance. The pellet trap in the garage is at eye level. This makes my shooting from a rest at about a 5 foot height not as steady as I would like. However, if I am real careful, I can normally get groups of 0.035 to 0.050 CtC with a UTG scope at 12X and R-10 pistol pellets. With a real Gamo aperture sight I get groups of 0.036 to 0.077, not being really careful with the biggest ones. It might also be my 70 YO eyes with aperture sights. The workmanship on the rifle is excellent, except as noted next. I also really like the trigger and the trigger adjustability on this rifle. I thought my Marauder was good until I shot this rifle.

Things I would have changed: QC at Air Arms seems to be somewhat lacking. Shortly after I unpacked the rifle, I noticed cracks in the varnish/lacquer starting at the stippling and going back about an inch. I wrote an email to PA over a week ago and have not gotten a response. I then sent another email yesterday with close up photos attached and are waiting for a response. After I sent the latest email, I examined the cracks more closely and discovered that they also go into the stippling and seem to be into the wood and not only the finish coat. If this were a $300 rifle then I would not be concerned with the small cracks, but a $1000 rifle should not be shipped this way.

What others should know: If you order one of these, expect very good to excellent accuracy, but examine the woodwork very carefully, as from mine and a couple of other reviews, it seems that the Air Arms workmanship and QC on the stock can be hit or miss. The velocity is somewhat less than shown in the specifications. Using 7.0 gr R-10 pistol pellets, it averages 535 fps at 170 BAR, dropping to 524 fps at 150 BAR and 506 fps at 130 BAR. At 135 BAR the POI at 10m has dropped about 0.030 inch from what it is at 170 BAR. At 110 BAR the velocity averages 488 fps. I kept track of the number of shots the first time I shot it and I got 105 shots from 170 BAR down to 130 BAR. AT 110 BAR I had gotten 140 shots. I used a magnifier to try to get an accurate pressure reading on the small reservoir gauge.

4.0 4.0

4.0 4.0

5.0 5.0

By Mark from USA on 2016-01-23
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5.01 rating

Verified Purchase

Things I liked: 1) Metal work is well executed, without any objectionable tool marks. 2) Polishing and bluing (actually a blackening) is uniform and dark under strong light. 3) Stock work is clean and well executed save for one problem (see below). 4) Trigger has a smooth second stage and the break is crisp and repeatable. Out-of-box my trigger broke at around 19 Oz. on my very old RCBS spring scale. After 300 rounds it breaks at 16-16.5 OZ. 5) Fully charging to 200 Bar and following the recommended recharge at 100 Bar I am getting about 150 rounds. You'll get 2 full practice sessions between charges. Given the small size of the cylinder (~100 cc) this rifle is easy to run with a pump. 6) The stock and trigger have plenty of adjustability.

Things I would have changed: 1) There is obvious tool chatter and grain tear out in the corners of the 6 cutouts at the air cylinder channel. I would not consider this to be normal on a $1000 rifle. One of the stock makers missed a step. 2) The aperture insert pre-installed in the front sight was badly bent. The sight's ears were too big for the slots in the sight tunnel and when the factory tightened the retainer the aperture was bent. None of my other inserts (from Anschutz) would fit either. A few carefully strokes on the sight tunnel slots with a needle file fixed that. I was able to flatten the bent insert with the help of a bench vise and a small brass hammer. 3) The bolt handle is too lightly constructed for my tastes and seems out of place in comparison to the rest of the rifle's build. I have noticed that if I retract the bolt too slowly the action will sometimes not cock- the lock work seems to need a little bolt speed. 4) Supplied front sight riser is flimsy plastic- should be steel.

What others should know: 1) The length of pull is quite short out-of-box, probably too short for most adult men. You will need to buy or make spacers to suit your needs. I added the optional adjustable metal butt plate to mine and have been happy with it. 2) If you use a sling you will need the optional rail insert (Harris HBA-ANS).

Show Other ReviewsCreate an online review and share your thoughts with other customers
  • William from USA asked:

    Does adjusting the power using the air flow/power adjustment screw on the right side affect the warranty? The adjustment would be small, about 30 fps.

    • William from USA asked:

      Does this rifle come pressurized from the factory? Mine arrived pressurized to 165 BAR.

      • William from USA asked:

        What is the warranty? Above the price it says Lifetime limited warranty, but the manual says 1 year warranty.

        • Val from USA:

          It's Limited Lifetime. Manual has not been updated yet.

      See all discussions

      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

      Air Arms S400 MPR Precision, Poplar Stock with DIN connector (5M)

      To start over click reset

      Airgun Academy Episode 38 - PCP Filling Systems

      Item Description

      S401P17SX05APT [PY-2171-4381]
      Ambidextrous poplar stock, 10-meter PCP rifle
      7 joules (5.15 ft-lbs)
      Caliber0.177" (4.5mm)
      Max Velocity540 fps
      StockPoplar
      GripAmbi

      This item is not eligible for coupon discounts

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