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There is something about a full-size AR that a 16-inch carbine just can't replicate, and the Colt AR15A4 is proof. This is the civilian counterpart to the M16A4 that Marines carried for years, built by the company whose name is stamped into the history of the platform. The 20-inch government profile barrel is chrome lined for long service life and cut with a 1:7 twist, so it stabilizes everything from lightweight varmint loads up to heavy 77-grain match bullets. That extra barrel length also squeezes noticeably more velocity out of 5.56 NATO than a carbine, and paired with the rifle-length direct impingement gas system, the recoil impulse is smooth and soft with very little muzzle rise.
The AR15A4 wears traditional furniture from end to end: fixed A2 buttstock, A2 pistol grip, and rifle-length polymer handguards with heat shields. Up front you get a fixed A2 post sight, and the adjustable A2 rear sight rides in a detachable carry handle. Pop the handle off and a flat-top Picatinny upper is waiting underneath for a scope or red dot, so you're not locked into irons if your eyes prefer glass. Details like M4 feed ramps, a magnetic particle inspected bolt, and a full-profile bolt carrier show that Colt didn't cut corners bringing this rifle back.
The longer sight radius makes iron-sight shooting easier and more forgiving, which is exactly why these rifles remain a favorite for service rifle matches, marksmanship practice, and anyone who learned on a full-size M16 and wants that familiar feel again. Owners consistently report tight fit, solid function right out of the box, and accuracy in the 1 MOA neighborhood with good ammo. At 39.5 inches overall and around 7.7 pounds, it balances the way a rifle should, steady and planted rather than whippy. A 30-round Magpul PMAG ships with it, so you're ready for the range the day it arrives. For collectors, match competitors, or anyone who wants the genuine article with the prancing pony on the receiver, this is the one.
Yes. The carry handle is detachable, and underneath it sits a standard flat-top Picatinny rail. Remove two thumbnuts and you can mount a scope, red dot, or LPVO just like any modern flat-top AR, then reinstall the handle whenever you want to run irons.
The 1:7 twist is the same rate the military uses, and it shines with heavier bullets in the 62 to 77 grain range. It will still shoot common 55 grain loads just fine for plinking and practice. Owners regularly report groups around 1 MOA at 100 yards with quality ammunition.
The 20-inch barrel adds roughly 200 to 250 fps of velocity with 5.56 loads, and the rifle-length gas system delivers a noticeably softer, smoother recoil impulse. You also get a longer sight radius, which makes iron sight shooting more precise. The trade-off is a longer, slightly heavier rifle, which most people find balances beautifully from standing or prone.
Very close. It shares the 20-inch government profile chrome-lined barrel, A2 furniture, flat-top upper with detachable carry handle, M4 feed ramps, and a full-profile MPI-tested bolt carrier group. The core difference is that the AR15A4 is semi-automatic only, without the military's burst fire capability.
| UPC | 098289023292 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | AR15A4 |
| Action | |
| ATF Type | MODERN SPORTING RIFLE |
| Barrel Finish | Black |
| Barrel Length | 20" |
| Caliber/Gauge | .223 REM/5.56 NATO |
| Capacity | 30 |
| Color | Black |
| Length | 39.5'' |
| Magazine Included | 1 x 30-Round |
| Model | |
| Number of Magazines | 1 30 rd. |
| Package Height | 3.0 |
| Package Width | 9.2 |
| Product Type | AR |
| Safety | Thumb |
| Shipping Weight | 9.65 |
| Sights | A2 Front/Carry Handle Rear |
| Sights Type | Adjustable Sights |
| State Restriction (CA) | NO DIRECT SHIP TO CALIFORNIA |
| State Restriction (IL) | NO SALE TO ILLINOIS PICA |
| State Restriction (OR) | NO SALE TO OREGON |
| State Restriction (RI) | NO DIRECT SHIP TO RHODE ISLAND |
| State Restriction (WA) | NO DIRECT SHIP TO WASHINGTON |
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