Posted: 4/25/2017 9:17:42 AM EDT
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Shot quite a bit of service rifles out at Perry; been out of it for a few years. Looking to start again.
I see the definition of an M16-based "service rifle" has changed quite a bit - M4 stocks, carbine barrels, optics, etc. Not sure I fully understand what they do/do not allow for rails. I have a flat top receiver with no rails on the handguard -- should be OK, yes? Also, I thought read the gas block must have as A2 front sight on it, but I cannot find the reference. is this true? Anything else I might want to know? |
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Popular setup that differs from grandpa's A2:
Lopro gas block KAC M5 on DCM freefloat tube or Geiselle NM rail; many still like A2 handguards Vortex, Leupold, NightForce, or March 4x optic Magpul UBR stock If it stays reliable, a bolt release relocator is handy. Edit: Alexfiggy has what I consider a proper modern service rifle that could actually do double duty. |
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OP,
If your handguard is the plastic mil-spec you are good to go. If it is of some other sort it must have rails at 12, 3, 6, and 9 o-clock. If your handguard is not configured this way (example: Keymod) you can add bolt-on rail pieces. This is what I did to make my legal-last-year-illegal-this-year keymod rail legal again. Rails have to cover more than half the length and must reach the foreward end. |
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Quoted:
LOL. So a Mk12 Mod 1 couldn't compete. Mount a sling swivel at the correct distance from the mag well. Lose the big scope for a 4.5x max. Lose the tactical pistol grip for an A2 grip. Lose the blasty brake for bare muzzle or A2 cage. Lose the bipod. |
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Quoted:
Add cheese graters to 4 sides of the the handguard. Mount a sling swivel at the correct distance from the mag well. Lose the big scope for a 4.5x max. Lose the tactical pistol grip for an A2 grip. Lose the blasty brake for bare muzzle or A2 cage. Lose the bipod. |
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Quoted:
Yep that about sums it up But you forgot to add.. Keep it under 8.5 pounds Quoted:
Quoted:
Add cheese graters to 4 sides of the the handguard. Mount a sling swivel at the correct distance from the mag well. Lose the big scope for a 4.5x max. Lose the tactical pistol grip for an A2 grip. Lose the blasty brake for bare muzzle or A2 cage. Lose the bipod. |
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Quoted:
Wait, what did I miss. 8.5 pounds? Mine is tipping 15. a) Rifles based on the M-16 or AR design and manufactured by a USA manufacturer must be used; 42 b) Total rifle weight, with sights and without sling, may not exceed 8.5 pounds; |
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Quoted:
5.2.3 U.S. Modern Sporting Rifles, Class A Category A Modern Sporting Rifles must comply with these additional requirements: a) Rifles based on the M-16 or AR design and manufactured by a USA manufacturer must be used; 42 b) Total rifle weight, with sights and without sling, may not exceed 8.5 pounds; |