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1 of 1 people found the following review helpful:
By Tom Gaylord from USA on 2012-05-25 08:47:23Things I liked:This is as accurate as the Crosman Challenger PCP 10-meter target rifle, and it allows you to use an AR lower with all the controls used on your firearm. The weight is good, the sights are excellent, the velocity is right where it should be and the shots count exceeds 100 per fill.
Things I would have changed:I would not change a thing on this rifle, but Crosman needs to make a non-firearm lower so shooters don't have to have the MAR177 mated to a firearm.
What others should know:Shoot only top-quality pellets, because life is too short to be inaccurate.
0 of 0 people found the following review helpful:
By John from Canada on 2014-08-20 20:36:51Things 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.