I've never known a rifle type that hasn't had an fte / ftf. Actually I have owned a few - but others of the same make & model have. Any machine can fail through wear, fouling, component failure, consumable failure, lack of lubrication or a host of other reasons. The mere presence of the "forward assist" on the AR15 / M16 platform shows at least one potential failure point. Heck, its a part of basic rifle handling drills to practice stoppage / clearing drills.
All military rifles are compromises - reliability and accuracy cause opposing design constraints - which is why match barrels and chambers are much tighter than "mil spec" - but suffer more extraction problems.
The M16 is a fine platform that suffers from a cartridge that, in my opinion, is underpowered for its intended target. Whilst there are many reasons why a .30 calibre MBR round is not suitable for all modern military purposes (notably weight and ability to fire accurate bursts from an unsupported position, there are probably better compromise calibres - indeed many would say 7.62 x 39 is one such - although its not perhaps the most accurate. I suspect a move to something in the 6mm range will eventually occur - bench rest shooters have been aware of the 6mm ballistic sweet spot for years. I hear good things about 6.5 Grendell. The probelm is of course that the logistical and financial challenges of changing the NATO standard round are eye watering.
As for the L98A2 vs L1A1 debate (SA80 vs SLR), they are different animals - a bullpup carbine vs a full length Main Battle Rifle. One is better at longer range, carries a heavier, harder hitting calibre. The other is far more handy in vehicles and buildings, light and versatile. Both have a place depending on the nature of the task. As a sport shooter, I would hate to use a big heavy rifle on Gallery Rifle (fast reactive 50 yard shooting), but I would hate to use a carbine at range.
Red