The first replica AR-15/M16/M4 air rifle I owned was the Crosman M4-177, a multi-pump pneumatic air rifle that is a bolt action 5-shot .177 caliber repeater.
D&L AirGuns had a few "De-tuned for Canada" 495 fps Cosman MTR77NPC break barrel nitro piston air rifles in stock about 4-5 years ago for $250 including shipping & tax , and I bought one to find out if it was as nice in person as it was in photographs, and it was much better in person!
I have a number of different types of rear sights for the AR-15/m16/m4 style rifles, as well as a couple of the A2 sights with half a dozen different types of front sight posts.
Customizing these types of air rifles is half the enjoyment for me.
I have a few slings to carry this AirGun.
I prefer to use iron sights over scopes or other optics. The recoil from this AirGun was rather violent for the first 100 shots, and a UTG rear M4 peep sight broke because of the shock of recoil!
I have chronographed all my AirGuns with all sorts of different pellets, roundball, slugs & steel, leadl copper, polymer & alloy BB's.
The Users guide/manual states the velocity as "up to 495 fps" with "standard LEAD pllets"
So, the air rifle is not tuned for alloy lead free lightweight pellets, but for 7.4 or 7.9 grain Crosman Premier pellets.
That was refreshing for a change.
My M4-177 multi-pump pneumatic air rifle only shot the lead pellets around 425 fps, and 5.4 grain Crosman fast flight lead free penetrators would chronograph in the high 480's.
This nitro piston break barrel AirGun actually consistently averages above 480 with 7.4 grain lead pellets!
My Crosman MTR77NPC was my first air rifle that wasn't in the "inexpensive" catagory. I would say that this AirGun is in the lower mid-range of spring & gas piston air rifles.
Perhaps since this is definitely an "adult AirGun", Crosman doesn't detune it as much as they do with the AirGuns designed for younger shooters to handle. The m4-177 is lightweight, and with the adjustable stock, it can fit a smaller person.
