As Crosman representative Mark Deboard explains: “With the [MAR 177 upper kit], you can take off your AR’s centerfire upper, replace it with the Crosman upper and go to your basement or garage to shoot .177 pellets. You’re getting great trigger time without going to the range and without buying .223 ammo. You can buy a tin of 500 pellets for about five bucks.” (With a good pellet trap you could practice in your basement — but first consult your state and municipal regulations).

The 7.4-lb Crosman MAR177 Conversion Kit replaces your existing AR/M4 style upper and converts it into a PCP .177-caliber competition air rifle with 21″ free floating Lothar Walther™ barrel. Designed to support 10-meter match air rifle competition, the MAR177 is also suited for service rifle shooters who want to practice indoors in winter. Fitted with a 10-shot rotary magazine, all the shooter has to do work the bolt back every time after firing. The air reservoir offers up to 120 shots per fill.

It looks like the Crosman MAR177 will be popular. Crosman’s Deboard noted that: “We took the MAR177 to Camp Perry last summer for the High Power Rifle Championships, shot it inside the 20 foot Crosman Trailer and everyone loved it.”

Price and Availability
The MAR177 starts shipping 1/25/2012. It is available initially at crosman.com, creedmoorsports.com, and pilkguns.com. Look for retail price around $700, though Creedmoor Sports has a pre-order price of $600.