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NDD:
We are talking about the KAC M-4 pricing, which was high (around $1300, IIRC), when it first came out.
An SPR is a horse of a different color, though by the time you build an SPR upper with the barrel, receiver, rail system, sights, suppressor adaptor, bolt carrier group, charging handle, gas block, mount and optic, and drop a match trigger and A1 stock into the lower, you are into some serious coin. I had one that an AMU smith built, it wouldn't shoot, so I took it to my long gun 'smith and he built a great one. I got a deal on the scope and some other parts, but I agree, just the SPR upper, minus optics probably has well over a grand in it.
I have shot the SureFire shorty can on a SAW, burning a 200 round ammo pack through it as fast as I could in 6-9 round continuous bursts, as well as putting 15 full mags through an M-4 with the standard FA556 can in less than 5 minutes. In both cases, the suppressors had heated through red to a straw color, but the bullets were still flying to the same POI and there were no problems, before or after. The SureFire suppressor guru said that they had cut down one of their cans after 30,000 rounds and there was no appreciable wear on any of the surfaces and it all miked out to as new specs. IMHO, there are very few cans that will take that kind of abuse and keep running. Some require replacement of internal parts in as little as 1,000 rounds, and you can no longer buy rebuild kits, you have to send it to a licensed manufacturer for rebuild.
On a separate note, the suppressors do blow a lot of gas back through a standard M-16 type weapon with a direct gas impimgement operating system. I always use the Gas Buster charging handle, and it still blows oil and smoke through the receiver all over my shooting glasses in a long range session.
Agree about the Ti. Great metal for the right application, but it will not do everything well and does not like extreme heat.
TR
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"It is not the critic who counts; not the man who points out how the strong man stumbles, or where the doer of deeds could have done them better. The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood; who strives valiantly; who errs, who comes short again and again, because there is no effort without error and shortcoming; but who does actually strive to do the deeds; who knows great enthusiasms, the great devotions; who spends himself in a worthy cause; who at the best knows in the end the triumph of high achievement, and who at the worst, if he fails, at least fails while daring greatly, so that his place shall never be with those cold and timid souls who neither know victory nor defeat." - President Theodore Roosevelt, 1910
De Oppresso Liber 01/20/2025
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