The MR556 is the civilian version of the HK416. It has a barrel length of 16.5, weighs 8.6 pounds, and uses the 5.56 x 45mm NATO. ... However, the MR556A1 has an overall superior barrel to the 416 because it does not have the chrome-lining which can affect accuracy and hide imperfections.
Absolutely yes, worth it. You can build an absolutely bad-ass, decked out AR for 3k and still have enough left over for ammo. That's the route I would do. Sure it's an amazing rifle, but you can build a better one plus all the accessories for less than that.
The primary performance cost of a short stroke gas piston over a traditional AR-15 gas system is extra weight. ... In fact, the main thing the short-stroke gas piston does to the MR556A1 is make the rifle heavier than an otherwise comparable AR-15 with a traditional gas system.
The HK416 was originally fielded by the U.S. Army's Assymmetric Warfare Group and now reportedly is used by US Navy SEALs and Delta Force. A version with a sixteen-inch barrel is being fielded by the U.S. Marine Corps as the M27 Infantry Automatic Rifle and will eventually equip all frontline Marine Corps infantry.
The HK416 has proven to be much more reliable (fewer stoppages for a given number of rounds fired) in all environments than the M-4. US Army testing showed a 75% reduction in stoppages vs the M4. ... (to be fair, some variants of the M4 have been upgraded to be Ambidextrous) More rail attachment space for accessories.
They are good guns, well manufactured and shoot straight out of the box. They are also expensive guns, costing half again as much as other guns that are equally well manufactured and shoot equally straight. ... Buying a decent set of factory magazines can cost as much as the gun itself.
The MR556 is the civilian version of the HK416. It has a barrel length of 16.5, weighs 8.6 pounds, and uses the 5.56 x 45mm NATO.
The build quality is very high. They have slightly odd designs, which they can sell a few of for a novelty premium. They have a reputation as the best you can buy, and some people are willing to pay a lot for a little extra quality. I owned an H&K P30 (9mm semi-auto pistol).
HK mags are made out of magical metal and plastics. That's why they're expensive. Also why you are able to put the bullets in backwards and still have it function.
Can Navy SEALs and other U.S. special forces choose what guns and equipment they use? Generally no, but sometimes yes. Typically, weapons are standard issue even in SOF. However, sometimes a unit has a variety, especially during transition periods or when there are different weapons for different roles.
Navy SEALs chose Glock 19 as the replacement for their favorite Sig Sauer P226. The decision was made in 2016 and so far, the Glock 19 was introduced as the new service weapons of the SEAL Teams. They slowly phased out the Sig P226 over the last few years.
Navy SEAL Weapons