Does the FN America FN 20" CHF Government Rifle work with the LMT Piston Full Auto Gen 2?
Barrel
FN America FN 20" CHF Government Rifle
from $321.99
Bolt Carrier Group
LMT Piston Full Auto Gen 2
from $425.70
FN America barrel and Lewis Machine & Tool bolt carrier group compatibility
Yes, they fit
The FN America FN 20" CHF Government Rifle works with the LMT Piston Full Auto Gen 2. Our compatibility rules found no conflict between them.
No one has built this exact setup yet, but FN America barrels with Lewis Machine & Tool bolt carrier groups are a common pairing.
Counted from real GunPartPicker builds: parts lists people put together while planning to buy.
Checked by the same rules the AR builder runs on every part you add: caliber, frame size, receiver pattern, thread pitch and gas length.
Fit is judged from the specs retailers list, which can be missing or wrong. Confirm with the manufacturer before you buy, and have a qualified gunsmith check any build before you fire it.
How often builders pair the FN America barrel and Lewis Machine & Tool bolt carrier group
Backed by thousands of qualified builds that have both a barrel and a bolt carrier group.
Share of builds with the FN America FN 20" CHF Government Rifle and any bolt carrier group
Share of builds with the LMT Piston Full Auto Gen 2 and any barrel
FN America FN 20" CHF Government Rifle
- Of barrel picks
- 1.5%
- Median paid
- n/a
LMT Piston Full Auto Gen 2
- Of bolt carrier group picks
- 0%
- Median paid
- $426
How we count ⌄
These shares come from GunPartPicker's build data: real parts lists people put together while planning a purchase, not sales or surveys. A build counts a part only when it is the final pick for its slot, so parts that were swapped out never count. Fit never comes from these numbers; it comes from our compatibility rules alone.
Frequently built with the FN America barrel and Lewis Machine & Tool bolt carrier group
The part builders pick most often in each slot alongside these two, checked against both. Parts that conflict are left out.
Lower Receiver
Handguard
Upper Receiver
Radical Firearms 5.56 Barreled Upper
Fits both
Charging Handle
Gas Block
Trigger
Pistol Grip
FN America FN 20" CHF vs LMT Piston Full Auto Gen 2: specs and prices
| FN America FN 20" CHF | LMT Piston Full Auto Gen 2 | |
|---|---|---|
| Best price | $321.99 at KY Gun Company | $425.70 at Primary Arms |
| Stores | 0 of 3 in stock | 0 of 1 in stock |
| Caliber | AR-15 | n/a |
| Gas System | Rifle | n/a |
| Length | 16 | n/a |
| Twist | 1:7 | n/a |
| Contour | Government | n/a |
| Thread | 1/2x28 | n/a |
| Cartridge | n/a | 5.56 NATO |
| Weight | 2.25 | n/a |
Both for $747.69 at today's best prices.
Today's best prices and 90 day price history
Every store we track for each part, cheapest in stock first. Prices are checked through the day.
Price history, last 90 days
- FN America FN 20" CHF Government Rifle: lowest $321.99 on Jul 13, highest $349.00 on Sep 1 over the last 90 days.
- LMT Piston Full Auto Gen 2: lowest $425.70 on Jul 6, highest $425.70 on Jul 6 over the last 90 days.
Bolt Carrier Groups frequently paired with the FN America FN 20" CHF Government Rifle
Most picked next to it in real builds. Only parts our rules say fit the FN America FN 20" CHF Government Rifle are listed.
Barrels frequently paired with the LMT Piston Full Auto Gen 2
Most picked next to it in real builds. Only parts our rules say fit the LMT Piston Full Auto Gen 2 are listed.
